add checksum checking for rbx
add checksum checking for rbx

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