- gem 'sass-rails', '~> 3.1.4'
- gem 'coffee-rails', '~> 3.1.1'
- gem 'uglifier', '>= 1.0.3'
+ gem 'sass-rails', '~> 4.0'
+ gem 'coffee-rails', '~> 4.0'
+ gem 'uglifier', '>= 1.3.0'
+ # http://qiita.com/scivola/items/ec7625118fcf6de5203a
+ gem 'coffee-script-source', '~> 1.8.0'