File to import not found or unreadable: twitter/bootstrap.

我在宝石的官方Github上发现了这个问题,但是没有一个解决方案对我有用.
这是我的设置：
的Gemfile

gem "twitter-bootstrap-rails"
gem 'font-awesome-rails'
gem 'sass-rails','~> 3.2.3'
group :assets do
  #gem 'sass-rails','~> 3.2.3'
  gem 'coffee-rails','~> 3.2.1'
  gem 'therubyracer',:platforms => :ruby
  gem 'uglifier','>= 1.0.3'
end

application.css

*= require_self
 *= require bootstrap_and_overrides
 *= require font-awesome
 *= require_tree .

bootstrap_and_overrides.css.sass

@import "twitter/bootstrap";
@import "twitter/bootstrap/bootstrap";
@import "twitter/bootstrap/responsive";

// Font Awesome
@import "fontawesome";

// Glyphicons
@import "twitter/bootstrap/sprites.scss";

我错过了正确的设置？

谢谢