Merge pull request #154 from dingpinglv/Iss4277_ReleaseV3.0

Fixed #4277: update readme of Cocos2d-html5
Adds ios/Mac project for sample game (js-moonwarriors).
Adds xcscheme files for samples.
Merge pull request #155 from dumganhar/master

Adds ios/Mac project for sample game (js-moonwarriors).
Fixed #4277: replace 'initWithSpriteFrame' to 'setSpriteFrame' in MoonWarriors.
Merge branch 'master' of https://github.com/cocos2d/cocos2d-js into Iss4277_ReleaseV3.0