added rake as a runtime dependancy for travis
added rake as a runtime dependancy for travis

raq929/githug,HanJisoo/Test,jaywon/githug,stephencelis/githug,jackmaney/githug,jackmaney/githug,raq929/githug,resource11/githug,zachalewel/githug,geoluther/githug,HanJisoo/Test,raq929/githug,wrestt/githug,kaylal12/githug,FP-QAs/githug,Gazler/githug,FP-QAs/githug,stephencelis/githug,Limags/githug,hydrox24/githug,blueyi/githug,blueyi/githug,ga-wdi-boston/githug,geoluther/githug,talexand/githug,youyou22/githug,talexand/githug,eshimel/githug,kuramameng/githug,Limags/githug,Limags/githug,resource11/githug,zachalewel/githug,FP-QAs/githug,talexand/githug,sideci-sample/sideci-sample-githug,jaywon/githug,FP-QAs/githug,ga-wdi-boston/githug,mtam2/githug,legendtkl/githug,mtam2/githug,Gazler/githug,hydrox24/githug,kaylal12/githug,resource11/githug,youyou22/githug,sideci-sample/sideci-sample-githug,eshimel/githug,hydrox24/githug,Gazler/githug,legendtkl/githug,kuramameng/githug,HanJisoo/Test,jaywon/githug,zachalewel/githug,jackmaney/githug,wrestt/githug,blueyi/githug,mtam2/githug,geoluther/githug,youyou22/githug,legendtkl/githug,kuramameng/githug,kaylal12/githug,wrestt/githug,eshimel/githug