SignalR.Compression

- This is in no way a final product. In essence this is just a cleaned up/more performant version of the Hackathon Payload Compression.
- Have a Samples project which has 2 samples to demonstrate how data is compressed
- Have JS Tests and Server tests
- Do not have a C# client because I'm trying to get the basics of the compression down for one client before building a second.

Details: https://github.com/SignalR/Experimental/blob/SignalR.Compression/src/Microsoft.AspNet.SignalR.Compression/README.md