Trying to replace 2 connections to one, for now not working
return a deferred from ampclient that fires when it's finished
Merge pull request #2 from djmitche/only-one-connection

return a deferred from ampclient that fires when it's finished
1. ClientCreator replaced by modern TCP4ClientEndpoint
2. addCallbacks replaced by @inlineCallbacks that call all functions in one connection
Removed ambiguous code line
Merge pull request #3 from MichaelMayorov/only-one-connection

Only one connection