drop 1.8.7, ree and 1.9.2 from travis
drop 1.8.7, ree and 1.9.2 from travis

EndingChaung/formtastic,ryanfox1985/formtastic,justinfrench/formtastic,Davidzhu001/formtastic,paulodiovani/formtastic,ryanfox1985/formtastic,justinfrench/formtastic,nishaya/formtastic,EndingChaung/formtastic,mikz/formtastic,Guestfolio/formtastic,ryanfox1985/formtastic,thenthen8515/formtastic,ConferenceCloud/formtastic,sideci-sample/sideci-sample-formtastic,Davidzhu001/formtastic,Guestfolio/formtastic,ConferenceCloud/formtastic,mikz/formtastic,thenthen8515/formtastic,paulodiovani/formtastic,nishaya/formtastic,justinfrench/formtastic