document the new :glob option to gemspec
document the new :glob option to gemspec

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