add mongodb flag to .travis.yml
add mongodb flag to .travis.yml

eljojo/statesman,pacso/statesman,timothyp/statesman,gocardless/statesman,timothyp/statesman,mkcode/statesmin,image-tester/statesman,mmontalvo/statesman,gocardless/statesman,pacso/statesman,div/statesman,eljojo/statesman,mmontalvo/statesman,image-tester/statesman,div/statesman