3 2 insta1

Created a new type of consumer (SlaveConsumer) that's able to consume events locally in a PG readslave;
Added batched API to send a batch of events for retry (reducing network roundtrips);
Added RPM build spec file (tested building in dev machine and tested deployement in pg hosts)
shall we have different sleeps for "no event from master" vs. "hasn't replicated to this slave yet"?. and stats?