review

effects、labels and menus have been reviewed.
Merge branch 'develop' of https://github.com/pascallin/cocos2d-html5 into develop

Conflicts:
	cocos2d/effects/CCGrabber.js
	cocos2d/effects/CCGrid.js
	cocos2d/labels/CCLabelAtlas.js
	cocos2d/labels/CCLabelBMFont.js
	cocos2d/menus/CCMenu.js
	cocos2d/menus/CCMenuItem.js