[WIP] force exit on lost connection
Send active KeepAlive packet for ninjam

Previous implemention was passive, mean
reply to server's keep alive messages.
So, the timing was up to incomming from server,
could be delay when inbounce connection is busy.
Wrap event loop for clean exit
Merge branch 'master' into force-exit-on-lost-connection
Merge pull request #11 from teamikl/force-exit-on-lost-connection

[WIP] force exit on lost connection

close #3 close #9