Merge pull request #4 from nikhilm/master

Implement unregister and update hello
Factoring server state information into a new type.  Adding serialization of server state
go fmt
Remove some debug logging
Wait until after we know the client uaid before using it as a key to the connected clients map
Add configuration file
go fmt. we need a commit hook
Add unregister support
Adding the missing / in the example config