Run tests with Travis CI

Change-Id: Ib6b50b951b44c2e4c1c510a3a3758ce7497a38bd
Reviewed-on: http://review.couchbase.org/29815
Reviewed-by: Volker Mische <volker.mische@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>