thanks to Rails 3.1' asset pipeline, we have to precompile assets in production see https://moocode.com/posts/1-deploying-a-rails-3-1-application-to-production
thanks to Rails 3.1' asset pipeline, we have to precompile assets in production see https://moocode.com/posts/1-deploying-a-rails-3-1-application-to-production