Remove mock library, use something dumber.
Create explicit InitiateConn function
Read bytes until the preface is completely consumed
Better comment
Merge pull request #10 from tildedave/real_client_server_interface

Build real client server interface
Move frame into main
Add unmarshalling of DATA payload
Completely unmarshal DATA frame (include flags)
Unmarshal PING frame
Handle errors in PING unmarshalling
Hnadle DATA unmarshalling errors
Unmarshal GOAWAY frame, fix bug with GOAWAY marshalling
Unmarshal HEADERS logic
Add error handling for HEADER unmarshalling
Unmarshal SETTINGS frame