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
1. Fixes #4957 that click test TestChangePlaySection, then it will crash.
2. Modify default value of selectedState to serialize check box data.
added notes for Windows 8.1 Universal App
Fix UIText miss copy contentSize for clone
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
Merge pull request #9459 from pipu/fix_#9457

Fixes #9457
Merge pull request #9462 from edwardzhou/fix_UIText_clone_missing_contentSize

Fix UIText miss copy contentSize for clone
[ci skip]update version
Merge branch 'v3' into v3-stable