Merge pull request cocos2d#1776 from dingpinglv/Iss4757_ReleaseAlpha2

Issue #4757: update the CHANGELOG.txt and README.mdown

Merge pull request cocos2d#1775 from dingpinglv/Iss4768_ReleaseV223

Closed #4768: update the reference of samples and README.mdown

Merge pull request cocos2d#1462 from dingpinglv/DevelopToMaster

tag Cocos2d-html5 v2.2.2

Merge pull request cocos2d#1261 from xingsenma/develop_action

closed cocos2d#3256: Fixed a bug of CCActionInterval that it will error when target have not own RGBAProtocol.

Merge pull request cocos2d#1157 from dingpinglv/Iss2844_RenameVersion

Closed cocos2d#2844: Rename version 2.1.6 of Cocos2d-html5 to 2.2

Merge pull request cocos2d#1145 from dingpinglv/DevelopToMaster

Merge develop to master

Merge pull request cocos2d#1043 from linshun/iss2580_v2.1.5

Merged v2.1.5 to master branch

Merge pull request cocos2d#971 from dingpinglv/Iss2144_FixBugForParti…

…cleSystem

fixed cocos2d#2144 modify condition for WebGL Mode.

Merge pull request cocos2d#914 from linshun/iss2085_v2.1.2beta2

issue cocos2d#2085: change version number.

Merge branch 'master' of https://github.com/cocos2d/cocos2d-html5