add chpater6
Merge pull request #15 from walzer/master

issue #3347, add catalog for "Parkour game with javascript"
fixed #3347. finish chapter6
add project zip file
fixed #3347. Finish chapter 6 of parkour game with cocos2d-html5
Merge pull request #16 from andyque/chapter6

fixed #3247, finish chapter 6 of cocos2d-html5 tutorial
rewrite the tutorial
review
new gui document, part2 and part3
Merge pull request #17 from leafsoar/master

new gui document, part2 and part3
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
review
Merge pull request #18 from gloryming/master

fixed #3278, rewrite en.md for  2.0-make-your-first-game-scene
new 6.0
rename article suffix
finished chpater7
fixed 3350. Finish chapter 7 of parkour game tutorials
fixed 3350. Finish
Merge pull request #19 from andyque/chapter7

fixed Chapter7
add en.md