v2.2.1

Bug #2821: Black screens in the android default browser with devices with 2.3.6 and lower.

Bug #2853: Fix a bug of cc.EditBox that setFontSize is invalid

Bug #2867: fix a bug of jsloader that it doesn't work on some browser

Bug #2901: Fix bugs of LabelTTF that it has wrong contentsize and position when it was setting the style to stroke or shadow

Bug #2916: Fix a bug of audio does not play correctly in advanced compress.

Bug #3016: Fix a bug of LayerGradient that it displays wrong when set content size.

Bug #3017: Fix a bug of Scale9Sprite that it error when _scale9Image is null.

Bug #3061: Fix a bug of LabelTTF that it doesn't work on baidu browser

Bug #3067: Correct ParallaxTest's mistake

Bug #3083: Fix Scale9Sprite's bug that its bottom board has a black shadow sometimes

Bug #3087: fix the MoonWarriors' bug that a black line shows on the background

Bug #3116: xxxRGBAs have four bugs at setCascadeColorEnabled/setCascadeOpacityEnabled functions

Bug #3128: Fix a bug of Sprite that it is not to be set transform dirty when set color and opacity.

Bug #3140: Removing HelloHTML5World's CircleSprite for JS-binding

Bug #3151: Reducing Some classes' dependency in cc.Director.

Bug #3175: Cocos2d-html5 doesn't work on Chrome 31 WebGL mode

Bug #3192: Fix bugs for releasing v2.2.1

Feature #2828: CocoStudio HTML5 support

Feature #3221: Releasing version 2.2.1

Refactor #2833: Returning a new object instead returning an object's reference for some Engine class to avoid some mistake.

Refactor #2852: Re-write EGLView and multiple resource adapting to optimize performance for mobile browser.

Refactor #2965: refactor ParticleExamples for jsb

Refactor #2981: Refactor cc.EGLView for multiple resolution

Refactor #2993: Refactor LabelTTF's getContentSize to return right value immediately

Refactor #3117: cc.Node's getBoundingBoxToWorld has been Refactored for Performance

Refactor #3120: Replacing cc.Assert for Performance, because it's very slow.

Refactor #3218: change api numberOfRunningActions to getNumberOfRunningActions