Simplify Travis test suite
Simplify Travis test suite

digitalnatives/jobsworth,ari/jobsworth,ari/jobsworth,webstream-io/jobsworth,digitalnatives/jobsworth,rafaspinola/jobsworth,digitalnatives/jobsworth,rafaspinola/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,rafaspinola/jobsworth,ari/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,ari/jobsworth,webstream-io/jobsworth,webstream-io/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,rafaspinola/jobsworth