JCBC-314: Bring README file up to date

Change-Id: Iec1a77e1cb9e5e3533da5db3df93e3620b66ef05
Reviewed-on: http://review.couchbase.org/26774
Reviewed-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Reviewed-by: Deepti Dawar <deepti.dawar@globallogic.com>
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>