WIP : One tool to rule them all (Ingestion/Query/Rollup)

1. Still very much a WIP. This tool will allow someone to interact directly with cassandra and use it as a datastore, by providing ingestion, querying as well as rolling up capabilities. 
2. In short, it wraps up the blueflood operations like ingestion, rollup and querying in a very simple command line tool.
3. Also, it brings in the functionality to bulk ingest data from a file, using Gson's streaming API.