diff --git a/Example/.swiftlint.yml b/Example/.swiftlint.yml
index 25e2d09..705f950 100644
--- a/Example/.swiftlint.yml
+++ b/Example/.swiftlint.yml
@@ -1,5 +1,38 @@
+#
+# Based on:
+#  - https://gist.github.com/tweetjay/1b7f00b6f312a5a2cf7b5676420b9b0c
+#  - https://github.com/brandenr/swiftlintconfig
+#
+
 opt_in_rules:
-  - empty_count
+  - empty_count                # Prefer checking isEmpty over comparing count to zero.
+  - force_unwrapping           # Force unwrapping should be avoided.
+  - anyobject_protocol         # Prefer using AnyObject over class for class-only protocols.
+  - empty_xctest_method        # Empty XCTest method should be avoided.
+  - lower_acl_than_parent      # Ensure definitions have a lower access control level than their enclosing parent
+  - overridden_super_call      # Some overridden methods should always call super
+  - prohibited_super_call      # Some methods should not call super, e.g. `UIViewController.loadView()`
+  - unused_import              # All imported modules should be required to make the file compile.
+  - unused_private_declaration # Private declarations should be referenced in that file.
+  - explicit_init              # Explicitly calling .init() should be avoided.
+  - closure_spacing            # Closure expressions should have a single space inside each brace.
+  - private_outlet             # IBOutlets should be private to avoid leaking UIKit to higher layers.
+  - operator_usage_whitespace  # Operators should be surrounded by a single whitespace when they are being used.
+  - first_where                # Prefer using `.first(where:)` over `.filter { }.first` in collections.
+  - object_literal             # Prefer object literals over image and color inits.
+  - fatal_error_message        # A fatalError call should have a message.
+  - missing_docs               # Declarations should be documented.
+  - file_header                # Header comments should be consistent with project patterns. 
+
+file_header:
+  required_pattern: |
+                    \/\/
+                    \/\/  SWIFTLINT_CURRENT_FILENAME
+                    \/\/  (GradientLoadingBar|GradientLoadingBar_Example)
+                    \/\/
+                    \/\/  Created by .*? on \d{1,2}\/\d{1,2}\/\d{2}\.
+                    \/\/  Copyright © \d{4} .*?\. All rights reserved\.
+                    \/\/
 
 line_length: 160
 
@@ -8,4 +41,26 @@ included:
   - ../GradientLoadingBar
 
 excluded:
-  - Pods
\ No newline at end of file
+  - Pods
+
+custom_rules:
+  comments_space:
+    name: "Space After Comment"
+    regex: '(^ *//\w+)'
+    message: "There should be a space after //."
+    severity: warning
+  empty_line_after_guard:
+    name: "Empty Line After Guard"
+    regex: '(^ *guard[ a-zA-Z0-9=?.\(\),><!]*\{[ a-zA-Z0-9=?.\(\),><!]*\}\n *(?!(?:return|guard))\S+)'
+    message: "There should be an empty line after a guard."
+    severity: warning
+  empty_line_after_super:
+    name: "Empty Line After Super"
+    regex: '(^ *super\.[ a-zA-Z0-9=?.\(\)\{\}:,><!]*\n *(?!(?:\}|return))\S+)'
+    message: "There should be an empty line after super."
+    severity: warning
+  unnecessary_type:
+    name: "Unnecessary Type"
+    regex: '[ a-zA-Z0-9]*(?:let|var) [ a-zA-Z0-9]*: ([a-zA-Z0-9]*)[\? ]*= \1'
+    message: "Type Definition Not Needed."
+    severity: warning
\ No newline at end of file
diff --git a/Example/GradientLoadingBar/AdvancedExampleViewController.swift b/Example/GradientLoadingBar/AdvancedExampleViewController.swift
index 44a98f8..9d21a6a 100644
--- a/Example/GradientLoadingBar/AdvancedExampleViewController.swift
+++ b/Example/GradientLoadingBar/AdvancedExampleViewController.swift
@@ -2,8 +2,8 @@
 //  AdvancedExampleViewController.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 29.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/30/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
@@ -12,8 +12,8 @@ import GradientLoadingBar
 class AdvancedExampleViewController: UIViewController {
     // MARK: - Outlets
 
-    @IBOutlet var customSuperviewButton: BlueBorderedButton!
-    @IBOutlet var customColorsButton: BlueBorderedButton!
+    @IBOutlet private var customSuperviewButton: BlueBorderedButton!
+    @IBOutlet private var customColorsButton: BlueBorderedButton!
 
     // MARK: - Private properties
 
diff --git a/Example/GradientLoadingBar/AppDelegate.swift b/Example/GradientLoadingBar/AppDelegate.swift
index 3dba8f7..b6cd926 100644
--- a/Example/GradientLoadingBar/AppDelegate.swift
+++ b/Example/GradientLoadingBar/AppDelegate.swift
@@ -2,8 +2,8 @@
 //  AppDelegate.swift
 //  GradientLoadingBar
 //
-//  Created by fxm90 on 09/30/2017.
-//  Copyright (c) 2017 fxm90. All rights reserved.
+//  Created by Felix Mau on 09/30/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
 //
 
 import GradientLoadingBar
diff --git a/Example/GradientLoadingBar/BasicExampleViewController.swift b/Example/GradientLoadingBar/BasicExampleViewController.swift
index d89ec42..d160ac7 100644
--- a/Example/GradientLoadingBar/BasicExampleViewController.swift
+++ b/Example/GradientLoadingBar/BasicExampleViewController.swift
@@ -2,8 +2,8 @@
 //  BasicExampleViewController.swift
 //  GradientLoadingBar_Example
 //
-//  Created by fxm90 on 09/30/2017.
-//  Copyright (c) 2017 fxm90. All rights reserved.
+//  Created by Felix Mau on 09/30/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/Example/GradientLoadingBar/Extensions/UIColor+CustomColors.swift b/Example/GradientLoadingBar/Extensions/UIColor+CustomColors.swift
index 483625e..9dde483 100644
--- a/Example/GradientLoadingBar/Extensions/UIColor+CustomColors.swift
+++ b/Example/GradientLoadingBar/Extensions/UIColor+CustomColors.swift
@@ -2,8 +2,8 @@
 //  UIColor+CustomColors.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 29.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/29/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/Example/GradientLoadingBar/NavigationBarExampleViewController.swift b/Example/GradientLoadingBar/NavigationBarExampleViewController.swift
index fb1b304..ff97aa8 100644
--- a/Example/GradientLoadingBar/NavigationBarExampleViewController.swift
+++ b/Example/GradientLoadingBar/NavigationBarExampleViewController.swift
@@ -2,8 +2,8 @@
 //  NavigationBarExampleViewController.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 29.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/29/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
@@ -12,7 +12,7 @@ import GradientLoadingBar
 class NavigationBarExampleViewController: UIViewController {
     // MARK: - Outlets
 
-    @IBOutlet var navigationBar: UINavigationBar!
+    @IBOutlet private var navigationBar: UINavigationBar!
 
     // MARK: - Private properties
 
diff --git a/Example/GradientLoadingBar/SafeAreaExampleViewController.swift b/Example/GradientLoadingBar/SafeAreaExampleViewController.swift
index c16b953..d508fd5 100644
--- a/Example/GradientLoadingBar/SafeAreaExampleViewController.swift
+++ b/Example/GradientLoadingBar/SafeAreaExampleViewController.swift
@@ -2,8 +2,8 @@
 //  SafeAreaExampleViewController.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 30.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/30/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/Example/GradientLoadingBar/Views/BlueBorderedButton.swift b/Example/GradientLoadingBar/Views/BlueBorderedButton.swift
index a636d3b..a106fec 100644
--- a/Example/GradientLoadingBar/Views/BlueBorderedButton.swift
+++ b/Example/GradientLoadingBar/Views/BlueBorderedButton.swift
@@ -2,8 +2,8 @@
 //  BlueBorderedButton.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 29.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/29/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/Example/GradientLoadingBar/Views/BlueFilledButton.swift b/Example/GradientLoadingBar/Views/BlueFilledButton.swift
index f7919fd..22f461e 100644
--- a/Example/GradientLoadingBar/Views/BlueFilledButton.swift
+++ b/Example/GradientLoadingBar/Views/BlueFilledButton.swift
@@ -1,9 +1,9 @@
 //
-//  BlueButton.swift
+//  BlueFilledButton.swift
 //  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 29.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/29/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/Example/Tests/Helpers/Extensions/Observable+ObserveDistinctTestCase.swift b/Example/Tests/Helpers/Extensions/Observable+ObserveDistinctTestCase.swift
index 07b5593..1d28161 100644
--- a/Example/Tests/Helpers/Extensions/Observable+ObserveDistinctTestCase.swift
+++ b/Example/Tests/Helpers/Extensions/Observable+ObserveDistinctTestCase.swift
@@ -1,9 +1,9 @@
 //
 //  Observable+ObserveDistinctTestCase.swift
-//  GradientLoadingBarTests
+//  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 25.08.18.
-//  Copyright © 2018 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 08/25/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import XCTest
diff --git a/Example/Tests/Helpers/Structs/DurationsTestCase.swift b/Example/Tests/Helpers/Structs/DurationsTestCase.swift
index 0ea1e5c..86b6267 100644
--- a/Example/Tests/Helpers/Structs/DurationsTestCase.swift
+++ b/Example/Tests/Helpers/Structs/DurationsTestCase.swift
@@ -1,9 +1,9 @@
 //
 //  DurationsTestCase.swift
-//  GradientLoadingBar_Tests
+//  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 30.10.17.
-//  Copyright © 2017 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 10/30/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
 //
 
 import XCTest
diff --git a/Example/Tests/ViewModel/GradientLoadingBarViewModelTestCase.swift b/Example/Tests/ViewModel/GradientLoadingBarViewModelTestCase.swift
index ce2e39a..9364aa1 100644
--- a/Example/Tests/ViewModel/GradientLoadingBarViewModelTestCase.swift
+++ b/Example/Tests/ViewModel/GradientLoadingBarViewModelTestCase.swift
@@ -1,9 +1,9 @@
 //
 //  GradientLoadingBarViewModelTestCase.swift
-//  GradientLoadingBar_Tests
+//  GradientLoadingBar_Example
 //
-//  Created by Felix Mau on 26.12.17.
-//  Copyright © 2017 CocoaPods. All rights reserved.
+//  Created by Felix Mau on 12/26/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
 //
 
 import Observable
diff --git a/GradientLoadingBar/Classes/BottomGradientLoadingBarController.swift b/GradientLoadingBar/Classes/BottomGradientLoadingBarController.swift
index 985d14c..f556553 100644
--- a/GradientLoadingBar/Classes/BottomGradientLoadingBarController.swift
+++ b/GradientLoadingBar/Classes/BottomGradientLoadingBarController.swift
@@ -2,7 +2,8 @@
 //  BottomGradientLoadingBarController.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 03.09.18.
+//  Created by Felix Mau on 09/03/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import Foundation
diff --git a/GradientLoadingBar/Classes/Extensions/ImmutableObservable/ImmutableObservable+ObserveDistinct.swift b/GradientLoadingBar/Classes/Extensions/ImmutableObservable/ImmutableObservable+ObserveDistinct.swift
index 5454bae..a7fb613 100644
--- a/GradientLoadingBar/Classes/Extensions/ImmutableObservable/ImmutableObservable+ObserveDistinct.swift
+++ b/GradientLoadingBar/Classes/Extensions/ImmutableObservable/ImmutableObservable+ObserveDistinct.swift
@@ -2,7 +2,8 @@
 //  ImmutableObservable+ObserveDistinct.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 25.08.18.
+//  Created by Felix Mau on 08/25/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import Foundation
diff --git a/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+CustomColors.swift b/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+CustomColors.swift
index 5839cdd..6969248 100644
--- a/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+CustomColors.swift
+++ b/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+CustomColors.swift
@@ -2,7 +2,8 @@
 //  UIColor+CustomColors.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 22.09.18.
+//  Created by Felix Mau on 09/22/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+DefaultValues.swift b/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+DefaultValues.swift
index 8d3999e..a2d1ea8 100644
--- a/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+DefaultValues.swift
+++ b/GradientLoadingBar/Classes/Extensions/UIColor/UIColor+DefaultValues.swift
@@ -1,15 +1,17 @@
 //
-//  UIColor+DefaultGradientColors.swift
+//  UIColor+DefaultValues.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 26.08.18.
+//  Created by Felix Mau on 08/26/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
 
 extension UIColor {
-    // iOS color palette
-    // From: https://codepen.io/marcobiedermann/pen/LExXWW
+    /// The default color palette for the gradient colors.
+    ///
+    /// - SeeAlso: https://codepen.io/marcobiedermann/pen/LExXWW
     public static let defaultGradientColorList = [
         UIColor.CustomColors.green,
         UIColor.CustomColors.blue.malibu,
diff --git a/GradientLoadingBar/Classes/Extensions/UIView/UIView+AnimateIsHidden.swift b/GradientLoadingBar/Classes/Extensions/UIView/UIView+AnimateIsHidden.swift
index eeca005..fd5791e 100644
--- a/GradientLoadingBar/Classes/Extensions/UIView/UIView+AnimateIsHidden.swift
+++ b/GradientLoadingBar/Classes/Extensions/UIView/UIView+AnimateIsHidden.swift
@@ -2,7 +2,8 @@
 //  UIView+AnimateIsHidden.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 15.12.18.
+//  Created by Felix Mau on 12/15/18.
+//  Copyright © 2018 Felix Mau. All rights reserved.
 //
 
 import UIKit
diff --git a/GradientLoadingBar/Classes/GradientLoadingBarController.swift b/GradientLoadingBar/Classes/GradientLoadingBarController.swift
index f798363..d642cfa 100644
--- a/GradientLoadingBar/Classes/GradientLoadingBarController.swift
+++ b/GradientLoadingBar/Classes/GradientLoadingBarController.swift
@@ -2,7 +2,7 @@
 //  GradientLoadingBarController.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 11.12.16.
+//  Created by Felix Mau on 12/11/16.
 //  Copyright © 2016 Felix Mau. All rights reserved.
 //
 
@@ -12,6 +12,7 @@ import UIKit
 /// Typealias for controller to match pod name.
 public typealias GradientLoadingBar = GradientLoadingBarController
 
+/// The `GradientLoadingBarController` mediates between the `GradientLoadingBarViewModel` and the corresponding `GradientView`.
 open class GradientLoadingBarController {
     // MARK: - Public properties
 
diff --git a/GradientLoadingBar/Classes/Structs/Durations.swift b/GradientLoadingBar/Classes/Structs/Durations.swift
index 62f2d66..9aa2656 100644
--- a/GradientLoadingBar/Classes/Structs/Durations.swift
+++ b/GradientLoadingBar/Classes/Structs/Durations.swift
@@ -2,7 +2,7 @@
 //  Durations.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 27.12.16.
+//  Created by Felix Mau on 12/27/16.
 //  Copyright © 2016 Felix Mau. All rights reserved.
 //
 
diff --git a/GradientLoadingBar/Classes/ViewModel/GradientLoadingBarViewModel.swift b/GradientLoadingBar/Classes/ViewModel/GradientLoadingBarViewModel.swift
index 3a23145..c3896e9 100644
--- a/GradientLoadingBar/Classes/ViewModel/GradientLoadingBarViewModel.swift
+++ b/GradientLoadingBar/Classes/ViewModel/GradientLoadingBarViewModel.swift
@@ -2,7 +2,8 @@
 //  GradientLoadingBarViewModel.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 26.12.17.
+//  Created by Felix Mau on 12/26/17.
+//  Copyright © 2017 Felix Mau. All rights reserved.
 //
 
 import Foundation
@@ -27,11 +28,11 @@ class GradientLoadingBarViewModel {
 
     // MARK: - Public properties
 
-    public var isVisible: ImmutableObservable<AnimatedVisibilityUpdate> {
+    var isVisible: ImmutableObservable<AnimatedVisibilityUpdate> {
         return isVisibleSubject
     }
 
-    public var superview: ImmutableObservable<UIView?> {
+    var superview: ImmutableObservable<UIView?> {
         return superviewSubject
     }
 
@@ -113,7 +114,7 @@ class GradientLoadingBarViewModel {
 // MARK: - Helper
 
 /// This allows mocking `UIApplication` in tests.
-protocol UIApplicationProtocol: class {
+protocol UIApplicationProtocol: AnyObject {
     var keyWindow: UIWindow? { get }
 }
 
diff --git a/GradientLoadingBar/Classes/Views/GradientView.swift b/GradientLoadingBar/Classes/Views/GradientView.swift
index 4ef23aa..79ff0ef 100644
--- a/GradientLoadingBar/Classes/Views/GradientView.swift
+++ b/GradientLoadingBar/Classes/Views/GradientView.swift
@@ -2,7 +2,7 @@
 //  GradientView.swift
 //  GradientLoadingBar
 //
-//  Created by Felix Mau on 10.12.16.
+//  Created by Felix Mau on 12/10/16.
 //  Copyright © 2016 Felix Mau. All rights reserved.
 //