URL: http://www.rubyflow.com/items/10208-floats-as-array-indexes-1-2-0-5-1-5-why-because-it-x27-s-sill

URL: http://createdbypete.com/articles/working-with-nested-forms-and-a-many-to-many-association-in-rails-4/

URL: http://supmua.org/

URL: http://www.confreaks.com/videos/2636-madisonruby2013-rapid-game-prototyping-with-ruby

URL: http://gavinmiller.io/2013/basics-of-ruby-memoization/

URL: http://blog.phusion.nl/2013/11/01/will-meteor-kill-rails-i-dont-know-but-phusion-passenger-open-sources-meteor-support/

URL: http://www.sitepoint.com/threads-ruby/

URL: http://www.rubyinside.com/what-rubys-double-pipe-or-equals-really-does-5488.html?x=1

URL: http://devblog.orgsync.com/building-custom-rails-attribute-validators/

URL: https://github.com/palavatv/palava-machine

URL: http://www.rubytutorial.io/how-to-test-an-autocomplete-with-rails-and-minitest

URL: https://shellycloud.com/blog/2013/10/easy-database-migration-using-taps

URL: http://www.railsinstallfest.org/guides/installfest/getting_started

URL: http://guides.rubyonrails.org/getting_started.html

URL: http://www.youtube.com/watch?v=qObzgUfCl28