fixed #3278, init
add title to each chapter
fixed #3278, add title to each chapter
fixed 3278, finish the tutorials
fixed #3278, finish chapter 4 of cocos2d-html5 tutorial
fixed #3278, add download link
add event dispatcher document
fixed #3283, add document and delete temp file
Merge pull request #9 from leafsoar/master

fixed #3283, add document
Merge pull request #8 from andyque/master

fixed #3278, finish chapter 4 of cocos2d-html5 tutorial