Update docs for 2.0.0b1
Update docs for 2.0.0b1

zwh6611/seajs,wenber/seajs,lianggaolin/seajs,liupeng110112/seajs,zaoli/seajs,zaoli/seajs,tonny-zhang/seajs,judastree/seajs,treejames/seajs,kaijiemo/seajs,sheldonzf/seajs,yuhualingfeng/seajs,twoubt/seajs,coolyhx/seajs,tonny-zhang/seajs,wenber/seajs,imcys/seajs,ysxlinux/seajs,jishichang/seajs,MrZhengliang/seajs,longze/seajs,kaijiemo/seajs,zwh6611/seajs,seajs/seajs,yern/seajs,seajs/seajs,angelLYK/seajs,AlvinWei1024/seajs,mosoft521/seajs,FrankElean/SeaJS,chinakids/seajs,coolyhx/seajs,eleanors/SeaJS,wenber/seajs,moccen/seajs,LzhElite/seajs,121595113/seajs,evilemon/seajs,jishichang/seajs,sheldonzf/seajs,lee-my/seajs,lovelykobe/seajs,ysxlinux/seajs,longze/seajs,JeffLi1993/seajs,coolyhx/seajs,uestcNaldo/seajs,moccen/seajs,kuier/seajs,miusuncle/seajs,yern/seajs,kaijiemo/seajs,Lyfme/seajs,zaoli/seajs,evilemon/seajs,moccen/seajs,baiduoduo/seajs,Gatsbyy/seajs,imcys/seajs,seajs/seajs,LzhElite/seajs,eleanors/SeaJS,baiduoduo/seajs,MrZhengliang/seajs,uestcNaldo/seajs,FrankElean/SeaJS,zwh6611/seajs,eleanors/SeaJS,mosoft521/seajs,PUSEN/seajs,JeffLi1993/seajs,treejames/seajs,sheldonzf/seajs,lovelykobe/seajs,liupeng110112/seajs,treejames/seajs,judastree/seajs,13693100472/seajs,ysxlinux/seajs,imcys/seajs,twoubt/seajs,121595113/seajs,yern/seajs,AlvinWei1024/seajs,Lyfme/seajs,MrZhengliang/seajs,judastree/seajs,AlvinWei1024/seajs,angelLYK/seajs,chinakids/seajs,Gatsbyy/seajs,baiduoduo/seajs,kuier/seajs,PUSEN/seajs,jishichang/seajs,yuhualingfeng/seajs,lovelykobe/seajs,longze/seajs,uestcNaldo/seajs,LzhElite/seajs,Lyfme/seajs,lee-my/seajs,liupeng110112/seajs,kuier/seajs,Gatsbyy/seajs,miusuncle/seajs,evilemon/seajs,FrankElean/SeaJS,tonny-zhang/seajs,lianggaolin/seajs,yuhualingfeng/seajs,hbdrawn/seajs,twoubt/seajs,lee-my/seajs,13693100472/seajs,PUSEN/seajs,miusuncle/seajs,JeffLi1993/seajs,angelLYK/seajs,hbdrawn/seajs,mosoft521/seajs,lianggaolin/seajs