Issue #2416: Fixed a bug that LabelBMFont does not display
Merge branch 'Iss2416_RefactorRenderer' of http://github.com/dingpinglv/cocos2d-html5 into Iss2416_RefactorRenderer
Merge pull request #14 from VisualSJ/Iss2416_RefactorRenderer

Issue #2416: Fixed a bug that LabelBMFont does not display