if the cdn.yml is empty, return a Hash
if the cdn.yml is empty, return a Hash

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