Improve RUBYLIB example in exec spec.
Improve RUBYLIB example in exec spec.

EasonYi/bundler,ngpestelos/bundler,anil826/bundler,roseweixel/bundler,EasonYi/bundler,bundler/bundler,jingweno/bundler,PG-kura/bundler,byroot/bundler,tgxworld/bundler,neslom/bundler,AiyionPrime/bundler,ipmobiletech/bundler,sideci-sample/sideci-sample-bundler,schaary/bundler,TimMoore/bundler,christer155/bundler,h4ck3rm1k3/bundler,christer155/bundler,JuanitoFatas/bundler,zhangkuaiji/bundler,ngpestelos/bundler,asymmetric/bundler,Wirachmat/bundler,vemmaverve/bundler,bronzdoc/bundler,ligi/bundler,neslom/bundler,jasonkarns/bundler,philnash/bundler,mvz/bundler,mpapis/bundler,mattbrictson/bundler-1,nju520/bundler,pivotal-cf-experimental/bundler,asymmetric/bundler,patvice/bundler,ipmobiletech/bundler,e2/bundler,agis-/bundler,cdwort/bundler,h4ck3rm1k3/bundler,RochesterinNYC/bundler,frsyuki/bundler,masarakki/bundler,CorainChicago/bundler,asutoshpalai/bundler,seanlinsley/bundler,schaary/bundler,AiyionPrime/bundler,RochesterinNYC/bundler,ximus/bundler,steved/bundler,davydovanton/bundler,smlance/bundler,seanlinsley/bundler,chef/bundler,jaym/bundler,danimashu/bundler,davydovanton/bundler,twcctz500000/bundler,haonature888/bundler,kohgpat/bundler,patvice/bundler,wenderjean/bundler,chulkilee/bundler,simplybusiness/bundler,Eric-Guo/bundler,steved/bundler,TimMoore/bundler,philnash/bundler,smlance/bundler,Wirachmat/bundler,suhastech/bundler,mvz/bundler,gregkare/bundler,asutoshpalai/bundler,cstrahan/bundler,Elffers/bundler,EthanK28/bundler,jaym/bundler,agis-/bundler,masarakki/bundler,Elffers/bundler,carpodaster/bundler,jingweno/bundler,wenderjean/bundler,roseweixel/bundler,kohgpat/bundler,haonaturel/bundler,suhastech/bundler,mpapis/bundler,elovelan/bundler,Eric-Guo/bundler,mdorrance/bundler,cdwort/bundler,lmtim/bundler,Teino1978-Corp/Teino1978-Corp-bundler,chulkilee/bundler,byroot/bundler,dilumnavanjana/bundler,bundler/bundler,ligi/bundler,chef/bundler,anil826/bundler,cstrahan/bundler,dilumnavanjana/bundler,bronzdoc/bundler,mdorrance/bundler,robinboening/bundler,rkh/bundler,joshsoftware/bundler,pjump/bundler,PG-kura/bundler,frsyuki/bundler,lmtim/bundler,elovelan/bundler,tgxworld/bundler,zhangkuaiji/bundler,1337807/bundler,sideci-sample/sideci-sample-bundler,carpodaster/bundler,haonature/bundler,simplybusiness/bundler,haocafes/bundler,danimashu/bundler,mattbrictson/bundler-1,nju520/bundler,joshsoftware/bundler,robinboening/bundler,CorainChicago/bundler,EthanK28/bundler,gregkare/bundler,ximus/bundler,jasonkarns/bundler,Teino1978-Corp/Teino1978-Corp-bundler,pjump/bundler,pivotal-cf-experimental/bundler