Set version to 1.1.4dp1

Change-Id: I485974a0d1b9edabb4ba639e78250bf307419ff6
Reviewed-on: http://review.couchbase.org/25614
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Tested-by: Matt Ingenthron <matt@couchbase.com>