Update dev guide doc
Update dev guide doc

ElJerry/wcf,imcarolwang/wcf,zhenlan/wcf,dotnet/wcf,StephenBonikowsky/wcf,hongdai/wcf,dotnet/wcf,hongdai/wcf,MattGal/wcf,StephenBonikowsky/wcf,mconnew/wcf,ElJerry/wcf,iamjasonp/wcf,shmao/wcf,imcarolwang/wcf,dotnet/wcf,iamjasonp/wcf,KKhurin/wcf,mconnew/wcf,ericstj/wcf,shmao/wcf,imcarolwang/wcf,ericstj/wcf,mconnew/wcf,KKhurin/wcf,MattGal/wcf,zhenlan/wcf