Added ``join`` and ``wait`` to promise API. Added ``end`` and removed ``error`` from Q API.
Added ``join`` and ``wait`` to promise API. Added ``end`` and removed ``error`` from Q API.

jymsy/q,IbpTeam/node-q,liwangbest/q,100star/q,aramk/q,yizziy/q,gorcz/q,kevinsawicki/q,rasata/q,X-Bird/q,homer0/q,signpost/q,npmcomponent/microjs-q,IbpTeam/node-q,aramk/q,SarunasAzna/q,harks198913/q,criferlo/q,homer0/q,bnicart/q,harks198913/q,SarunasAzna/q,cgvarela/q,gustavobeavis/q,X-Bird/q,b12consulting/q,lidasong2014/q,miamarti/q,dracher/q,IlianStefanov/q,welbornio/q,STRd6/q,ShopCo/q,welbornio/q,miamarti/q,lidasong2014/q,mcanthony/q,jymsy/q,dracher/q,behind2/q,npmcomponent/techjacker-q,yizziy/q,potato620/q,gustavobeavis/q,Zeratul5/q,CozyCo/q,lvdou2518/q,behind2/q,criferlo/q,signpost/q,willsmth/q,cgvarela/q,linalu1/q,linalu1/q,lvdou2518/q,CozyCo/q,gorcz/q,liwangbest/q,manushthinkster/q,Zeratul5/q,ajunflying/q,kriskowal/q,kriskowal/q,zhangwenquan/q,IlianStefanov/q,Muffasa/q,manushthinkster/q,bnicart/q,ShopCo/q,willsmth/q,potato620/q,b12consulting/q,Muffasa/q,mcanthony/q,rasata/q,pwmckenna/q,darkdragon-001/q,greyhwndz/q,ajunflying/q,greyhwndz/q,pwmckenna/q,darkdragon-001/q,zhangwenquan/q