Coffeescript 2 Rails Asset Pipeline
According to this (https://github.com/rails/ruby-coffee-script) it looks like the coffee-script-source gem would need to get updated to the latest version to use the standard coffee-rails gem that we're used to.
https://github.com/rails/coffee-rails
Making updates to those gems would probably be the best way to do things since it would work exactly as we've used Coffeescript in the past with Rails.
I took over the integration part for coffeescript 2 in rails and my pull request just got merged :)
https://github.com/rails/ruby-coffee-script/pull/23