title: Rails 3.1.3 - Loading assets from subfolder in vendor/assets/stylesheets
body: <p>I want to load an external stylesheet from app/vendor/assets/stylesheets/twitter... but Sprockets keeps complaining that the file can't be found.  My app/assets/stylesheets/application.css looks like this:</p>
  
  <pre><code>/*
  *= require_self
  *= require bootstrap
  *= require sass_main
  */
  </code></pre>
  
  <p>I tried adding the subdirectory to the asset path like this:</p>
  
  <pre><code>config.assets.paths &lt;&lt; "#{Rails.root}/app/vendor/assets/stylesheets/twitter"
  </code></pre>
  
  <p>...but no luck. What I gotta do?</p>