* #62 - Added a Force copy flag in case the hadoop cluster is version 2*...


* #62 - Adding an optional -f flag to hadoop copy commands in case of hadoop2 clusters.
* #67 - Added retries while updating the job to status running after successful launch.
* Changed scripts to create a sample cluster with version 2.4.0.
We will address the retry issue system wide in genie2 which is just a couple of months away. We are changing the way transactions will happen in genie2, so the work done now is like throwaway. So i decided to keep this change isolated, and try and alleviate the issue we are getting in production, which originates only from this point.