Merge pull request #27 from samuele3hu/v3

Update the project setting of LiquidFun-EyeCandy and Testbed on the win32,iOS/Mac and android platform
fix audio swift code to use static class methods instead of singleton methods.
Audio engine no longer inherits from Ref.
updating bindings submodule
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x-samples into v3