Issue #3501: update version number of Engine
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Iss3501_ReleasingV2.2.2
Merge pull request #270 from pandamicro/master

Resolve bug of event detection in simulator.html of moon warriors
Issue #3501: corrected a mistake in XHRTest.js that all response labels show in one line.
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Iss3501_ReleasingV2.2.2
Merge pull request #271 from dingpinglv/Iss3501_ReleasingV2.2.2

Issue #3501: corrected a mistake in XHRTest.js that all response labels show in one line.
modify text display on button.
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests
Issue #3501: reformat CocosDenshionTest
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into Iss3501_ReleasingV2.2.2
Merge pull request #273 from dingpinglv/Iss3501_ReleasingV2.2.2

Issue #3501: reformat CocosDenshionTest
Merge pull request #274 from pandamicro/master

Resolve bug of SceneTest case
Merge pull request #272 from shujunqiao/master

Edited the text on button from img to labelTTF, in CocosDenshion
Merge pull request #5 from cocos2d/master

Pull down updates from cocos2d:develop