Upgraded the cassandra-driver to 2.0.1. Turned on the batch processing.
Closes #8

[INFO] -------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] cpo ............................................... SUCCESS [  1.238 s]
[INFO] cpo-core .......................................... SUCCESS [  3.998 s]
[INFO] cpo-jdbc .......................................... SUCCESS [ 12.551 s]
[INFO] cpo-cassandra ..................................... SUCCESS [  4.916 s]
[INFO] cpo-plugin ........................................ SUCCESS [  1.361 s]
[INFO] -----------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] -----------------------------------------------------------