Update search_keywords example to match current API
Update search_keywords example to match current API

Change-Id: I9a8971d5af73b73e1e77ea692984d6148170a6b3
Reviewed-on: http://review.couchbase.org/27057
Tested-by: Mordechai Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>

couchbase/couchbase-python-client,mnunberg/couchbase-python-client,couchbase/couchbase-python-client,mnunberg/couchbase-python-client