* [ios] create RootView on main thread
* [ios] create RootView on main thread

Hanks10100/incubator-weex,weexteam/incubator-weex,misakuo/incubator-weex,Neeeo/incubator-weex,acton393/incubator-weex,Hanks10100/weex,boboning/weex,houfeng0923/weex,MrRaindrop/incubator-weex,boboning/weex,Hanks10100/incubator-weex,zzyhappyzzy/weex,HomHomLin/weex,lzyzsd/weex,zhangquan/weex,xiayun200825/weex,leoward/incubator-weex,acton393/weex,kfeagle/weex,kfeagle/weex,Tancy/weex,MrRaindrop/incubator-weex,KalicyZhou/incubator-weex,Hanks10100/weex,Hanks10100/weex,erha19/incubator-weex,misakuo/incubator-weex,alibaba/weex,zhangquan/weex,lvscar/weex,houfeng0923/weex,weexteam/incubator-weex,HomHomLin/weex,LeeJay0226/weex,namedlock/weex,xiayun200825/weex,alibaba/weex,erha19/incubator-weex,MrRaindrop/incubator-weex,bigconvience/weex,misakuo/incubator-weex,acton393/weex,acton393/weex,erha19/incubator-weex,namedlock/weex,zhangquan/weex,yuguitao/incubator-weex,zzyhappyzzy/weex,MrRaindrop/weex,lvscar/weex,MrRaindrop/weex,alibaba/weex,LeeJay0226/weex,weexteam/incubator-weex,xiayun200825/weex,weexteam/incubator-weex,MrRaindrop/incubator-weex,bigconvience/weex,alibaba/weex,cxfeng1/weex,MrRaindrop/weex,weexteam/incubator-weex,boboning/weex,houfeng0923/weex,Neeeo/incubator-weex,acton393/incubator-weex,LeeJay0226/weex,alibaba/weex,HomHomLin/weex,Hanks10100/incubator-weex,dianwodaMobile/DWeex,leoward/incubator-weex,boboning/weex,zzyhappyzzy/weex,lzyzsd/weex,lvscar/weex,HomHomLin/weex,cxfeng1/incubator-weex,KalicyZhou/incubator-weex,zzyhappyzzy/weex,kfeagle/weex,miomin/incubator-weex,namedlock/weex,cxfeng1/incubator-weex,leoward/incubator-weex,alibaba/weex,bigconvience/weex,boboning/weex,lvscar/weex,MrRaindrop/weex,lzyzsd/weex,acton393/weex,miomin/incubator-weex,acton393/incubator-weex,MrRaindrop/weex,dianwodaMobile/DWeex,bigconvience/weex,alibaba/weex,cxfeng1/weex,KalicyZhou/incubator-weex,yuguitao/incubator-weex,houfeng0923/weex,Hanks10100/incubator-weex,dianwodaMobile/DWeex,zhangquan/weex,yuguitao/incubator-weex,cxfeng1/weex,acton393/incubator-weex,KalicyZhou/incubator-weex,Hanks10100/incubator-weex,lzyzsd/weex,leoward/incubator-weex,acton393/incubator-weex,LeeJay0226/weex,leoward/incubator-weex,Hanks10100/weex,lzyzsd/weex,zhangquan/weex,Neeeo/incubator-weex,yuguitao/incubator-weex,bigconvience/weex,miomin/incubator-weex,Tancy/weex,lvscar/weex,weexteam/incubator-weex,erha19/incubator-weex,xiayun200825/weex,erha19/incubator-weex,Tancy/weex,misakuo/incubator-weex,erha19/incubator-weex,HomHomLin/weex,misakuo/incubator-weex,kfeagle/weex,Hanks10100/incubator-weex,lvscar/weex,Tancy/weex,acton393/incubator-weex,namedlock/weex,Neeeo/incubator-weex,KalicyZhou/incubator-weex,MrRaindrop/incubator-weex,Hanks10100/weex,yuguitao/incubator-weex,Hanks10100/incubator-weex,namedlock/weex,boboning/weex,xiayun200825/weex,MrRaindrop/incubator-weex,yuguitao/incubator-weex,miomin/incubator-weex,acton393/weex,miomin/incubator-weex,Tancy/weex,zhangquan/weex,miomin/incubator-weex,lzyzsd/weex,xiayun200825/weex,namedlock/weex,cxfeng1/weex,Tancy/weex,cxfeng1/incubator-weex,kfeagle/weex,miomin/incubator-weex,misakuo/incubator-weex,HomHomLin/weex,LeeJay0226/weex,bigconvience/weex,cxfeng1/weex,Neeeo/incubator-weex,dianwodaMobile/DWeex,MrRaindrop/weex,Hanks10100/weex,Neeeo/incubator-weex,zzyhappyzzy/weex,KalicyZhou/incubator-weex,houfeng0923/weex,dianwodaMobile/DWeex,erha19/incubator-weex,dianwodaMobile/DWeex,acton393/incubator-weex,leoward/incubator-weex,acton393/incubator-weex,cxfeng1/weex,miomin/incubator-weex,Hanks10100/incubator-weex,houfeng0923/weex,acton393/weex,cxfeng1/incubator-weex,cxfeng1/incubator-weex,LeeJay0226/weex,zzyhappyzzy/weex,kfeagle/weex,erha19/incubator-weex,cxfeng1/incubator-weex