Add HTML Comment node

https://dom.spec.whatwg.org/#interface-comment

HTMLKit/HTMLComment.h

@@ -0,0 +1,17 @@
+//
+//  HTMLComment.h
+//  HTMLKit
+//
+//  Created by Iska on 25/02/15.
+//  Copyright (c) 2015 BrainCookie. All rights reserved.
+//
+
+#import "HTMLNode.h"
+
+@interface HTMLComment : HTMLNode
+
+@property (nonatomic, copy) NSString *data;
+
+- (instancetype)initWithData:(NSString *)data;
+
+@end

HTMLKit/HTMLComment.m

@@ -0,0 +1,41 @@
+//
+//  HTMLComment.m
+//  HTMLKit
+//
+//  Created by Iska on 25/02/15.
+//  Copyright (c) 2015 BrainCookie. All rights reserved.
+//
+
+#import "HTMLComment.h"
+
+@implementation HTMLComment
+
+- (instancetype)initWithData:(NSString *)data
+{
+	self = [super initWithName:@"#comment" type:HTMLCommentNode];
+	if (self) {
+		self.data = data ?: @"";
+	}
+	return self;
+}
+
+- (NSString *)textContent
+{
+	return self.data;
+}
+
+- (void)setTextContent:(NSString *)textContent
+{
+	self.data = textContent ?: @"";
+}
+
+#pragma mark - NSCopying
+
+- (id)copyWithZone:(NSZone *)zone
+{
+	HTMLComment *copy = [super copyWithZone:zone];
+	copy.data = self.data;
+	return copy;
+}
+
+@end

HTMLKit/HTMLNode.h

@@ -51,10 +51,10 @@ typedef NS_ENUM(short, HTMLNodeType)
 
 @property (nonatomic, strong, readonly) HTMLNode *nextSibling;
 
-@property (nonatomic, copy) NSString *value;
-
 @property (nonatomic, copy) NSString *textContent;
 
+- (instancetype)initWithName:(NSString *)name type:(HTMLNodeType)type;
+
 - (BOOL)hasChildNodes;
 
 - (HTMLNode *)childNodeAtIndex:(NSUInteger)index;