Perforce changelist 315386

Replacing all files with release branch of .NET 4.0 fork from
https://github.com/tdanner/SignalR/tree/release
Perforce changelist 319712

FB 278590 - SingalR 2.0.0 RC1 support .NET 4.0 - binary support merged
with .Net 4.0 support
Perforce changelist 319888

FB 278590 - SingalR 2.0.0 RC1 support .NET 4.0 - binary support merged
with .Net 4.0 support
Perforce changelist 335681

Microsoft signalR core is referenced by dll other than assembly
Perforce changelist 347457

305870 OTI Echo service: SignalR changes