Add section for Sparkle 2.x documentation

_layouts/documentation-v2.html

@@ -0,0 +1,18 @@
+---
+layout: default
+---
+<div class="container">
+  <div class="row">
+    <div class="col-md-12">
+		<ul class="nav nav-tabs">
+		  <li role="presentation"><a href="/documentation/">Sparkle 1.x</a></li>
+		  <li role="presentation" class="active"><a href="/documentation/v2/">Sparkle 2.x (Beta)</a></li>
+		</ul>
+    </div>
+  </div>
+  <div class="row">
+    <div class="col-md-12">
+        {{ content }}
+    </div>
+  </div>
+</div>

_layouts/documentation.html

@@ -2,6 +2,14 @@
 layout: default
 ---
 <div class="container">
+  <div class="row">
+    <div class="col-md-12">
+		<ul class="nav nav-tabs">
+		  <li role="presentation" class="active"><a href="/documentation/">Sparkle 1.x</a></li>
+		  <li role="presentation"><a href="/documentation/v2/">Sparkle 2.x (Beta)</a></li>
+		</ul>
+    </div>
+  </div>
   <div class="row">
     <div class="col-md-12">
         {{ content }}

documentation/v2/index.md

@@ -0,0 +1,16 @@
+---
+layout: documentation-v2
+id: documentation
+title: Documentation for Sparkle 2
+---
+
+## Getting Started
+
+Sparkle 2.x is the upcoming new version of Sparkle with support for sandboxed applications.
+
+It is currently in beta.
+
+We're working on the documentation. In the mean time, please have a look at the [README file](https://github.com/sparkle-project/Sparkle/blob/2.x/README.markdown) for details.
+
+
+