update changelog
update changelog

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