buildpacks

Nov 17, 2016 buildpacks Ruby - Version 2.3.2, 2.2.6, 2.1.10 support added

https://www.ruby-lang.org/en/news/2016/11/15/ruby-2-3-2-released/ https://www.ruby-lang.org/en/news/2016/11/15/ruby-2-2-6-released/