remove unnecessary .gem files when packaging gems
remove unnecessary .gem files when packaging gems

dlorson/gentle-buildpack,mintybit/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,blueapron/heroku-buildpack-ruby,Git-Host/prelang-buildpack,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,diasks2/heroku-buildpack-mecab,trumaker/heroku-buildpack-turbo-sprockets,Jonty/ruby-buildpack,ericboehs/heroku-buildpack-ruby,hpcloud/ruby-buildpack,packetmonkey/heroku-buildpack-ruby,ChefSteps/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,makifund/heroku-buildpack-ruby,sstelfox/buildpack-ruby,cloudfoundry/ruby-buildpack,daltonrenaldo/heroku-buildpack-ruby,pietrop/heroku-buildpack-ruby,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,KoanHealth/heroku-buildpack-marvin-setup,engineyard/heroku-buildpack-ruby,catalyzeio/buildpack-ruby,takii/db2rubybuildpack,cmaggard/heroku-buildpack-turbo-sprockets,fcruxen/ruby-buildpack,zoomer/heroku-buildpack-ruby-bower,zoomer/heroku-buildpack-ruby-bower,schu/heroku-buildpack-ruby,Micka33/heroku-buildpack-ruby-liblua,ericroberts/heroku-buildpack-ruby,ltrademark/heroku-buildpack-ruby,heroku/heroku-buildpack-ruby,bwaite-jaroop/heroku-buildpack-ruby,mperejda/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,musicglue/heroku-buildpack-ruby,Altoros/ruby-buildpack,moneyadviceservice/heroku-buildpack-ruby-bowndler,bskyb-commerce/help-heroku-buildpack,samfrench/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,cloudn/buildpack-ruby,cordata/heroku-buildpack-ruby,zidekmat/buildpack-ruby,orenyk/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,sstelfox/buildpack-ruby,jumptvs/BP_Ruby,catalyzeio/buildpack-ruby,scottatron/moc-buildpack,Altoros/ruby-buildpack,Nedomas/heroku-buildpack-ruby-minus-node-with-node-paths,space150/heroku-buildpack-ruby,beydogan/ruby-buildpack,brightbytes/heroku-buildpack-ruby-without-assets-precompile,iamjarvo/ruby-buildpack,engineyard/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,hpcloud/ruby-buildpack,sky-uk/help-heroku-buildpack,barakav/heroku-buildpack-ruby,cloudn/buildpack-ruby,CPPWind/ruby-buildpack,michaelphines/alexa-nest,bskyb-commerce/ruby-buildpack,ablease/custom-buildpack,dleavitt/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,stefansundin/heroku-buildpack-ruby,reesio/heroku-buildpack-ruby,barakav/heroku-buildpack-ruby,rowanoulton/heroku-buildpack-ruby,CPPWind/ruby-buildpack,heroku/heroku-buildpack-ruby,zidekmat/buildpack-ruby,tdenovan/heroku-buildpack-ruby,ablease/custom-buildpack,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,bskyb-commerce/ruby-buildpack,jonseaberg/heroku-buildpack-turbo-sprockets,orlando/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,aarongray/heroku-buildpack-ruby,Git-Host/prelang-buildpack,zunda/heroku-buildpack-ruby,mintybit/heroku-buildpack-ruby,lyoshenka/heroku-buildpack-ruby-jekyll,orlando/heroku-buildpack-ruby,Jonty/ruby-buildpack,rowanoulton/heroku-buildpack-ruby,ndbroadbent/heroku-buildpack-turbo-sprockets,recursecenter/heroku-buildpack-ruby,d-reinhold/cf-buildpack-ruby,jasonlevens/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,mperejda/heroku-buildpack-ruby,icelab/heroku-buildpack-ruby,anay/buildpack-ruby-with-oracle-jdk,guidance-guarantee-programme/heroku-buildpack-princexml-old,DouglasAllen/heroku-buildpack-ruby,tomwolfe/heroku-buildpack-gsl-ruby,hellojustin/heroku-buildpack-custom-ruby,stefansundin/heroku-buildpack-ruby,takii/db2rubybuildpack,Micka33/heroku-buildpack-ruby-liblua,electricobjects/heroku-buildpack-ruby,erintherad/heroku-buildpack-ruby,Scalingo/ruby-buildpack,aarongray/heroku-buildpack-ruby,jonasoberschweiber/heroku-buildpack-ruby,awebneck/heroku-buildpack-canvas,scottatron/moc-buildpack,sky-uk/ruby-buildpack,cloudfoundry/ruby-buildpack,qnyp/heroku-buildpack-ruby-bower,ascot21/heroku-buildpack-turbo-sprockets,DyegoCosta/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,wakermahmud/heroku-buildpack-jekyll,mattmanning/heroku-buildpack-ruby-jekyll,ChefSteps/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,teodor-pripoae/heroku-buildpack-ruby,fcruxen/ruby-buildpack,tomwolfe/heroku-buildpack-gsl-ruby,0x00evil/heroku-buildpack-ruby,schu/buildpack-testing,ilpoldo/heroku-buildpack-ruby,instacart/heroku-buildpack-ruby,KoanHealth/heroku-buildpack-marvin-setup,awebneck/heroku-buildpack-canvas,hatofmonkeys/ruby-testing-buildpack,ibmdb/db2rubybuildpack,leonardykris/mos-ruby-buildpack,swipesense/heroku-buildpack-ruby,stolt45/heroku-buildpack-ruby-with-sqlite3,cloudfoundry/ruby-buildpack,bwaite-jaroop/heroku-buildpack-ruby,takii/db2rubybuildpack,ndbroadbent/heroku-buildpack-turbo-sprockets,jumptvs/BP_Ruby,tenjikinc/heroku-buildpack-ruby,pkgr/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,ericroberts/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,rvizza/heroku-buildpack-gsl-ruby,bellycard/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,packetmonkey/heroku-buildpack-ruby,codykrieger/heroku-buildpack-jekyll,shuber/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,sky-uk/help-heroku-buildpack,mrhenry/heroku-buildpack-ruby,erintherad/heroku-buildpack-ruby,trumaker/heroku-buildpack-turbo-sprockets,samfrench/heroku-buildpack-ruby,beydogan/ruby-buildpack,ibmdb/db2rubybuildpack,ilpoldo/heroku-buildpack-ruby,fcruxen/ruby-buildpack,tdenovan/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,takii/heroku-buildpack-ruby,crdschurch/heroku-buildpack-ruby,jayshreeanand/heroku-buildpack-ruby,ibmdb/db2rubybuildpack,dtao/deft-buildpack-ruby,dtao/teeny-buildpack,amaltson/heroku-buildpack-ruby,mattwalters/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,tpope/heroku-buildpack-ruby-tpope,lyoshenka/heroku-buildpack-ruby-jekyll,ablease/custom-buildpack,cmaggard/heroku-buildpack-turbo-sprockets,righi/instacart-heroku-buildpack,bskyb-commerce/help-heroku-buildpack,Genius/heroku-buildpack-ruby,vhx/heroku-buildpack,electricobjects/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,ltrademark/heroku-buildpack-ruby,hatofmonkeys/ruby-testing-buildpack,pkgr/heroku-buildpack-ruby,cloudControl/buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,schu/buildpack-testing,CPPWind/ruby-buildpack,qstream/heroku-buildpack-ruby,bellycard/heroku-buildpack-ruby,dlorson/gentle-buildpack,redhotvengeance/heroku-buildpack-deep-thought,daltonrenaldo/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,cloudn/buildpack-ruby,Altoros/ruby-buildpack,derrek/heroku-buildpack-ruby,sky-uk/ruby-buildpack,d-reinhold/cf-buildpack-ruby,Scalingo/ruby-buildpack,jasonlevens/heroku-buildpack-ruby,guidance-guarantee-programme/heroku-buildpack-princexml-old,donnykurnia/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk,Genius/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,DouglasAllen/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,pilotcreative/heroku-buildpack-ruby,redhotvengeance/heroku-buildpack-deep-thought,musicglue/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,recursecenter/heroku-buildpack-ruby,mrhenry/heroku-buildpack-ruby,Dim25/heroku-buildpack-ruby-GSL,cloudn/buildpack-ruby,swipesense/heroku-buildpack-ruby,jonasoberschweiber/heroku-buildpack-ruby,Jonty/ruby-buildpack,ericboehs/heroku-buildpack-ruby,righi/instacart-heroku-buildpack,qstream/heroku-buildpack-ruby,sky-uk/ruby-buildpack,anay/buildpack-ruby-with-oracle-jdk,wakermahmud/heroku-buildpack-jekyll,dtao/deft-buildpack-ruby,shuber/heroku-buildpack-ruby,leonardykris/mos-ruby-buildpack,jumptvs/BP_Ruby,makifund/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk-new,Jonty/ruby-buildpack,jgable/buildpack-ruby-rack-setup-tasks,ruby/heroku-buildpack-www-ruby-lang,jgable/buildpack-ruby-rack-setup-tasks,teodor-pripoae/heroku-buildpack-ruby,allomov/fat-free-heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,DigitalInnovation/heroku-buildpack-mslabs,reesio/heroku-buildpack-ruby,DigitalInnovation/heroku-buildpack-mslabs,cloudControl/buildpack-ruby,hpcloud/ruby-buildpack,hellojustin/heroku-buildpack-custom-ruby,hixi/heroku-buildpack-ruby,dtao/teeny-buildpack,hixi/heroku-buildpack-ruby,ascot21/heroku-buildpack-turbo-sprockets,cordata/heroku-buildpack-ruby,schu/heroku-buildpack-ruby,icelab/heroku-buildpack-ruby,HYPERHYPER/heroku-buildpack-ruby,dleavitt/heroku-buildpack-ruby,takii/heroku-buildpack-ruby,gbenedict/heroku-buildpack-ruby,gls1/heroku-buildpack-ruby-pdftk-new,dieze/heroku-buildpack-ruby-hooks,sky-uk/ruby-buildpack,pietrop/heroku-buildpack-ruby,andycroll/heroku-buildpack-jekyll,stolt45/heroku-buildpack-ruby-with-sqlite3,ekaranto/rails4-bluemix-buildpack,amaltson/heroku-buildpack-ruby,simonnordberg/heroku-buildpack-ruby,derrek/heroku-buildpack-ruby,takii/db2rubybuildpack,rvizza/heroku-buildpack-gsl-ruby,0x00evil/heroku-buildpack-ruby,vhx/heroku-buildpack,donnykurnia/heroku-buildpack-ruby,diasks2/heroku-buildpack-mecab,michaelphines/alexa-nest,tpope/heroku-buildpack-ruby-tpope,hpcloud/ruby-buildpack,crdschurch/heroku-buildpack-ruby,DyegoCosta/heroku-buildpack-ruby,iamjarvo/ruby-buildpack,HYPERHYPER/heroku-buildpack-ruby,blueapron/heroku-buildpack-ruby,ablease/custom-buildpack,hatofmonkeys/ruby-testing-buildpack,iamjarvo/ruby-buildpack,d-reinhold/cf-buildpack-ruby,fcruxen/ruby-buildpack,space150/heroku-buildpack-ruby,fgbreel/heroku-buildpack-ruby,bskyb-commerce/ruby-buildpack,CPPWind/ruby-buildpack,Dim25/heroku-buildpack-ruby-GSL,Altoros/ruby-buildpack,simonnordberg/heroku-buildpack-ruby,jumptvs/BP_Ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler