Support 3 different databases on Travis
Support 3 different databases on Travis

reinteractive/ransack,martndemus/ransack,amboxer21/ransack,nagyt234/ransack,outstand/ransack,praktijkindex/ransack,Mario245/ransack,avit/ransack,laserlemon/ransack,activerecord-hackery/ransack,roman-franko/ransack,johan--/ransack,mariorcardoso/ransack,guilleva/ransack,AndrewSwerlick/ransack,Eric-Guo/ransack,vaski/ransack