Merge pull request #1 from cocos2d/master

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Merge branch 'master' of https://github.com/cocos2d/cocos-docs

Conflicts:
	manual/framework/native/graphic/coordinate-system/zh.md
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
Modify two article about setting up development environments
Merge pull request #198 from dingpinglv/Iss_ReleaseNote

Update release note of Cocos2d-html5 v3.0 and cocos console's document
Merge pull request #197 from renshan/master

Modify two article about setting up development environments
update release note of cocos2d-js
Merge branch 'master' of https://github.com/cocos2d/cocos-docs into Iss_EventManagerDoc