emit events from clients.
* incorporate http status into ClientEvent.
* expose http status in ClientResponse
* track http status in heartbeater. If it is ever != 200, quit the while loop and allow a HeartbeatStoppedEvent to be emitted.
brace in wrong place.
comment.
getStatus() -> getStatusCode()
some tests.
Merge pull request #11 from racker/RSR-115/emit_events

RSR-115 emit events in the java client