add index.js on root
add index.js on root

74sharlock/thinkjs,akira-cn/thinkjs,lukw00/thinkjs,maxzhang/thinkjs,Qihoo360/thinkjs,thinkjs/thinkjs,snadn/thinkjs,akira-cn/thinkjs,75team/thinkjs,maxzhang/thinkjs,lukw00/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,75team/thinkjs,74sharlock/thinkjs,75team/thinkjs