Adding requires.txt for quick install of dependencies
[adhoc] Moving start script into top-level directory because paths suck
Adding an idle sleep delay to prevent CPU drain
[63635788] Reconnecting to downstreams on error and logging updates

 * if replication server goes offline, attempt to reconnect and retry op
 * using rotating file handler, rotates every 50MB
 * killing noisy debug messages
 * adding info message for every 1k documents replicated from source
Swapping Threading.event for gevent.event