Merge pull request #56 from calcu16/master

Splitting up timeout exception from other exceptions for connection issu...
Upgrading netty version in sbt build.
Merge pull request #60 from linkedin/cluster_2

Upgrading netty version in sbt build.
Changing naming from PartitionsIds to PartitionedIds.
Adding comments on cluster id based node selection codes.
Changing error message for more descriptive info on single cluster request.
Version bumping up.
Merge pull request #61 from linkedin/cluster

Reflecting the decisions during code reviews.
Adding cluster id checkings in advacne to cluster centric request work without selective retry.
Bump up version.
Merge pull request #62 from linkedin/cluster

Fixing bug for specific cluster request without selective retry configs
Removing stack traces for ConnectTimeoutExceptions