fix travis yaml
fix travis yaml

harsha2010/magellan,andrewor14/magellan,kcompher/magellan,YanjieGao/magellan,andrewor14/magellan,simonellistonball/magellan,harsha2010/magellan,kcompher/magellan,simonellistonball/magellan,YanjieGao/magellan