Merge pull request #1456 from dingpinglv/DevelopToMaster

tag Cocos2d-html5 v2.2.2
Merge pull request #1462 from dingpinglv/DevelopToMaster

tag Cocos2d-html5 v2.2.2
fixed typo
Merge pull request #1538 from asalga/master

fixed typo
Merge pull request #1774 from dingpinglv/Iss4768_ReleaseV223

Issue #4768: merge develop branch to master branch
Closed #4768: update the reference of samples and README.mdown