Added comparison with native node-hbase-client and code/config cleanup

Hi,
I added comparison with my fork of native HBase client (added compatibility with 0.94.12 and some another fixes) witch we use already in production environment. Here is my code and results. This results isn't too objective because both gateways (thrift and rest) has SPOF (gateway nodes), native clients works directly with RS and zookeepers quorum. For this forks too much better with more distribute regions and can utilize directly all of assigned RS. This test show only workload with one RS and one region, but still is faster than both gateways and is good to know.