relax rails versions to 3.0
relax rails versions to 3.0

yui-knk/draper,Bastes/draper,totzyuta/draper,sideci-sample/sideci-sample-draper,donaldpiret/draper,jianyuan/draper,baberthal/draper,totzyuta/draper,chuck-john/draper,Bastes/draper,krainboltgreene/draper,jianyuan/draper,drapergem/draper,mallikarjunayaddala/draper,turingschool/draper,estum/draper,drapergem/draper,outstand/draper,estum/draper,liwangbest/draper,yui-knk/draper,chuck-john/draper,turingschool/draper,SpencerCDixon/draper,SpencerCDixon/draper,mallikarjunayaddala/draper,baberthal/draper,liwangbest/draper,outstand/draper,drapergem/draper