add "About CocoStudio".
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
add "Contribution"
add "architecture and directory structure"
add "supported platforms and programming languages"
add "Android and NDK"
add "Bada Environment Setup"
add "BlackBerry Environment Setup"
add "Emscripten usage"
add "how to create a multi platform project in one command line"
add "Linux Environment Setup"
add "Mac OS X Environment Setup"
add  "Native Client Environment Setup"
add "tizen environment setup"
add "windows phone8 environment setup"
add "windows 7 environment setup"
add "windows 8 metro environment setup"
Merge branch 'master' of https://github.com/cocos2d/cocos-docs
update catalog
Merge pull request #134 from u0u0/master

add wiki articles