remove myget references; use nuget instead
updated cla
update access token validation nuget
Updated Ws-Fed sample
Merge branch 'dev'

Conflicts:
	source/Clients/SampleAspNetWebApi/SampleAspNetWebApi.csproj
	source/Clients/SampleAspNetWebApi/Startup.cs
	source/Clients/SampleAspNetWebApi/packages.config
Merge branch 'dev'
Updated walkthrough sample