closed #3652: armature animation does not display correctly in canvas
issue #3652: armature animation does not display correctly in canvas
Merge pull request #1487 from xingsenma/develop

closed #3652: armature animation does not display correctly in canvas
Merge pull request #1488 from pandamicro/develop

Move CCFormatHelper and CCNS content into CCCommon.js
Fixed #3709: Refactored cc.Screen to support all browsers
Tested on Safari / Chrome / Firefox / Opera, firefox and opera doesn’t take count of exitFullscreen function, all other functionalities works well