joshby247

I've incorporated the feedback. I removed the error check for the empty pipe in readLast. It looks like ScaldingStore's merge should handle this correctly

in addition to using a converted HBaseByteArrayStore I also renamed main() in ScaldingRunning so the "getting started" wiki instructions weren't impacted by another main() in summingbird-example

Added stuff to write/read the last processed BatchID from ZK. I have to confess that I don't have much experience interacting with ZK directly (mostly use systems that use ZK)...