check if workers are avail in zmq client/server
set uri lookup to 1/50 second
make sure the address frame is sent back to the router
change to single byte message payloads for the protocol
and call the feature "first alive load balancing"
check all servers every 1/10th of second 50 times before
failing out on requesting
Merge pull request #183 from localshred/bdewitt/check_workers_avail

Bdewitt/check workers avail