Updated part 3 of parkour game to Cocos2d-JS v3.0
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
updated catalog for cocos2d-js v3.0 tutorials
Added two figures
updated resolution settings.
Merge pull request #286 from linshun/master

Updated chapter 3 of parkour tutorials to v3.0