build 1.6 branch on Travis
build 1.6 branch on Travis

zhangkuaiji/bundler,pivotal-cf-experimental/bundler,ipmobiletech/bundler,danimashu/bundler,Wirachmat/bundler,kohgpat/bundler,agis-/bundler,mattbrictson/bundler-1,jasonkarns/bundler,jaym/bundler,haonature888/bundler,cdwort/bundler,chef/bundler,suhastech/bundler,chulkilee/bundler,christer155/bundler,elovelan/bundler,EthanK28/bundler,philnash/bundler,roseweixel/bundler,RochesterinNYC/bundler,Eric-Guo/bundler,mvz/bundler,neslom/bundler,TimMoore/bundler,sideci-sample/sideci-sample-bundler,nju520/bundler,seanlinsley/bundler,chulkilee/bundler,joshsoftware/bundler,asymmetric/bundler,Elffers/bundler,h4ck3rm1k3/bundler,ximus/bundler,wenderjean/bundler,masarakki/bundler,cstrahan/bundler,mdorrance/bundler,gregkare/bundler,EasonYi/bundler,sideci-sample/sideci-sample-bundler,asutoshpalai/bundler,dilumnavanjana/bundler,lmtim/bundler,mpapis/bundler,schaary/bundler,asymmetric/bundler,elovelan/bundler,tgxworld/bundler,cstrahan/bundler,davydovanton/bundler,gregkare/bundler,zhangkuaiji/bundler,smlance/bundler,e2/bundler,ligi/bundler,smlance/bundler,seanlinsley/bundler,RochesterinNYC/bundler,jingweno/bundler,twcctz500000/bundler,anil826/bundler,mdorrance/bundler,h4ck3rm1k3/bundler,haonaturel/bundler,suhastech/bundler,bundler/bundler,CorainChicago/bundler,wenderjean/bundler,PG-kura/bundler,steved/bundler,PG-kura/bundler,frsyuki/bundler,tgxworld/bundler,bundler/bundler,frsyuki/bundler,asutoshpalai/bundler,ipmobiletech/bundler,kohgpat/bundler,jingweno/bundler,dilumnavanjana/bundler,Elffers/bundler,pivotal-cf-experimental/bundler,nju520/bundler,Teino1978-Corp/Teino1978-Corp-bundler,roseweixel/bundler,lmtim/bundler,patvice/bundler,pjump/bundler,simplybusiness/bundler,danimashu/bundler,anil826/bundler,jasonkarns/bundler,byroot/bundler,AiyionPrime/bundler,ligi/bundler,ngpestelos/bundler,masarakki/bundler,cdwort/bundler,neslom/bundler,CorainChicago/bundler,JuanitoFatas/bundler,ngpestelos/bundler,Eric-Guo/bundler,ximus/bundler,davydovanton/bundler,pjump/bundler,agis-/bundler,byroot/bundler,EasonYi/bundler,Wirachmat/bundler,simplybusiness/bundler,bronzdoc/bundler,bronzdoc/bundler,christer155/bundler,haonature/bundler,mattbrictson/bundler-1,philnash/bundler,haocafes/bundler,joshsoftware/bundler,carpodaster/bundler,EthanK28/bundler,vemmaverve/bundler,AiyionPrime/bundler,chef/bundler,Teino1978-Corp/Teino1978-Corp-bundler,steved/bundler,carpodaster/bundler,mpapis/bundler,TimMoore/bundler,robinboening/bundler,patvice/bundler,jaym/bundler,schaary/bundler,mvz/bundler,robinboening/bundler