CBLT-312:  artifacts now named:

    couchbase-lite-ios-{EDITION}_{VERSION}.zip
    couchbase-lite-ios-{EDITION}_{VERSION}_Documentation.zip

Change-Id: I567e99e205a9264d9eb5437bccf387eac826b388
Reviewed-on: http://review.couchbase.org/38159
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>