Add Websocket support for Mac platform
Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_cocostudio

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Merge branch 'v3' of https://github.com/cocos2d/cocos2d-x into v3_cocostudio
Merge pull request #9461 from MSOpenTech/v3-wp8-release-notes

added notes to ReadMe for Windows 8.1 Universal App
Merge pull request #9455 from samuele3hu/v3_cocostudio

Add Websocket support for Mac platform