Reorder sprite tests
Issue #4294: Fix bug in Cocostudio Tests
Issue #4294: Fix bug in Cocostudio Scene Tests
Issue #4294: Fix DoubleSprite Test bug
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js
Merge pull request #94 from pandamicro/master

Issue #4294: Fix bug in Cocostudio test and DoubleSprite test