Update package branding for 5.0 previews.
Update package branding for 5.0 previews.

StephenBonikowsky/wcf,dotnet/wcf,imcarolwang/wcf,mconnew/wcf,dotnet/wcf,dotnet/wcf,mconnew/wcf,mconnew/wcf,imcarolwang/wcf,imcarolwang/wcf,StephenBonikowsky/wcf