There is one here: http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-3-2-to-rails-4-0 http://edgeguides.rubyonrails.org/upgra

There is one here: http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-3-2-to-rails-4-0 http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.ht...