Start 1.1.0 development.

Change-Id: I74a0acc1e10832317a15e8e3243e053941d1420c
Reviewed-on: http://review.couchbase.org/44012
Tested-by: Michael Nitschinger <michael.nitschinger@couchbase.com>
Reviewed-by: Simon Baslé <simon@couchbase.com>