[gem] clarify what release task does
[gem] clarify what release task does

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