Added LayerGradient test to layerTests
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-js into develop
Merge pull request #849 from dingpinglv/develop

Added LayerGradient test to layerTests
Fixed #5990: Facebook SDK Test moved to main menu
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-js into develop
Merge branch 'develop' of https://github.com/pandamicro/cocos2d-js into develop