Updated heroku-api to 0.4.0
Updated heroku-api to 0.4.0

heroku/heroku-buildpack-ruby,dieze/heroku-buildpack-ruby-hooks,jumptvs/BP_Ruby,tpope/heroku-buildpack-ruby-tpope,orlando/heroku-buildpack-ruby,cordata/heroku-buildpack-ruby,moneyadviceservice/heroku-buildpack-ruby-bowndler,makifund/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,jumptvs/BP_Ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,beydogan/ruby-buildpack,pilotcreative/heroku-buildpack-ruby,brightbytes/heroku-buildpack-ruby-without-assets-precompile,Scalingo/ruby-buildpack,andycroll/heroku-buildpack-jekyll,ericboehs/heroku-buildpack-ruby,pilotcreative/heroku-buildpack-ruby,mattmanning/heroku-buildpack-ruby-jekyll,zunda/heroku-buildpack-ruby,zoomer/heroku-buildpack-ruby-bower,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,mattmanning/heroku-buildpack-ruby-jekyll,andycroll/heroku-buildpack-jekyll,ekaranto/rails4-bluemix-buildpack,Genius/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,cloudfoundry/ruby-buildpack,pkgr/heroku-buildpack-ruby,markaschneider/heroku-buildpack-ruby-ffmpeg-sox,cordata/heroku-buildpack-ruby,tenjikinc/heroku-buildpack-ruby,donnykurnia/heroku-buildpack-ruby,Scalingo/ruby-buildpack,ekaranto/rails4-bluemix-buildpack,instacart/heroku-buildpack-ruby,qnyp/heroku-buildpack-ruby-bower,dieze/heroku-buildpack-ruby-hooks,vhx/heroku-buildpack,instacart/heroku-buildpack-ruby,vhx/heroku-buildpack,pkgr/heroku-buildpack-ruby,orenyk/heroku-buildpack-ruby,zunda/heroku-buildpack-ruby,beydogan/ruby-buildpack,Genius/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,cloudfoundry/ruby-buildpack,qnyp/heroku-buildpack-ruby-bower,bwaite-jaroop/heroku-buildpack-ruby,zoomer/heroku-buildpack-ruby-bower,tpope/heroku-buildpack-ruby-tpope,jumptvs/BP_Ruby,cloudfoundry/ruby-buildpack,heroku/heroku-buildpack-ruby,jonseaberg/heroku-buildpack-turbo-sprockets,orlando/heroku-buildpack-ruby,ruby/heroku-buildpack-www-ruby-lang,bwaite-jaroop/heroku-buildpack-ruby,ekaranto/rails4-bluemix-buildpack,cloudfoundry/ruby-buildpack,moneyadviceservice/heroku-buildpack-ruby-bowndler,tenjikinc/heroku-buildpack-ruby,makifund/heroku-buildpack-ruby,ericboehs/heroku-buildpack-ruby,cloudfoundry/ruby-buildpack,jumptvs/BP_Ruby