Adding 3.0.0 beta1 manifest

Change-Id: I844ef2f3f6cf4a71046f5d8d920d69681fbf30a9
Reviewed-on: http://review.couchbase.org/39045
Reviewed-by: Chris Hillery <ceej@couchbase.com>
Tested-by: Chris Hillery <ceej@couchbase.com>