Updated to the latest version of katana beta2 nightly.
Added a test for the case when we wait on a hub invocation from the client

#2153
Made changes as per code review feedback

#2153
Merge branch 'release' into dev

Conflicts:
	samples/Microsoft.AspNet.SelfHost.Samples/packages.config
	samples/Microsoft.AspNet.SignalR.LoadTestHarness/packages.config
	samples/Microsoft.AspNet.SignalR.Samples/packages.config
	src/Microsoft.AspNet.SignalR.Core/packages.config
	src/Microsoft.AspNet.SignalR.Hosting.Memory/packages.config
	tests/Microsoft.AspNet.SignalR.Client.JS.Tests/packages.config
	tests/Microsoft.AspNet.SignalR.FunctionalTests/Client/HubProxyFacts.cs
	tests/Microsoft.AspNet.SignalR.FunctionalTests/packages.config
	tests/Microsoft.AspNet.SignalR.Tests.Common/packages.config
	tests/Microsoft.AspNet.SignalR.Tests/packages.config