Fixed #1933 Add a WebGL toggle flag for tests
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js-tests into iss1933_AddWebGLFlag
Fixed #1933 modify renderMode for Tests
Merge pull request #142 from dingpinglv/iss1933_AddWebGLFlag

Fixed #1933 Add a WebGL toggle flag for tests