Add some comments

ISEmojiView/ISEmojiView.h

@@ -3,26 +3,46 @@
 //  ISEmojiViewSample
 //
 //  Created by isaced on 14/12/25.
-//  Copyright (c) 2014年 isaced. All rights reserved.
+//  Copyright (c) 2014 Year isaced. All rights reserved.
 //
 
 #import <UIKit/UIKit.h>
 
 @protocol ISEmojiViewDelegate;
 
+/**
+ *  The custom keyboard view
+ */
 @interface ISEmojiView : UIView
 
+/**
+ *  ISEmojiView Delegate
+ */
 @property (nonatomic, assign) id<ISEmojiViewDelegate> delegate;
 
 @end
 
+/**
+ *  ISEmojiView Delegate
+ *  Used to respond to some of the operations callback
+ */
 @protocol ISEmojiViewDelegate <NSObject>
 
+/**
+ *  When you choose a Emoji
+ */
 -(void)emojiView:(ISEmojiView *)emojiView didSelectEmoji:(NSString *)emoji;
+
+/**
+ *  When the touch bottom right corner of the delete key
+ *  You should remove the last character(emoji) in the text box
+ */
 -(void)emojiView:(ISEmojiView *)emojiView didPressDeleteButton:(UIButton *)deletebutton;
 
 @end
 
-@interface ISDeleteButton : UIButton
 
-@end
+/**
+ *  The Delete key
+ */
+@interface ISDeleteButton : UIButton    @end

ISEmojiView/ISEmojiView.m

@@ -3,7 +3,7 @@
 //  ISEmojiViewSample
 //
 //  Created by isaced on 14/12/25.
-//  Copyright (c) 2014年 isaced. All rights reserved.
+//  Copyright (c) 2014 Year isaced. All rights reserved.
 //
 
 #import "ISEmojiView.h"
@@ -162,6 +162,9 @@ static const CGFloat EmojiFontSize = 32;
 
 @implementation ISDeleteButton
 
+/**
+ *  Draw the delete key
+ */
 -(void)drawRect:(CGRect)rect{
 
     // Rectangle Drawing