title: precompile asset targets are 404 in development mode
body: <p>I want the assets directory outside of the app directory. So I moved it out.</p>
  
  <ul>
  <li>app
  <ul>
  <li><s>assets</s></li>
  </ul></li>
  <li>assets</li>
  </ul>
  
  <p>And added the new folder to sprockets in <code>config/application.rb</code>.</p>
  
  <pre><code>config.assets.paths &lt;&lt; root.join('assets')
  </code></pre>
  
  <p>Precompiling works fine, but I can't request assets in development mode. </p>
  
  <pre><code>Started GET "/stylesheets/application.css" for 127.0.0.1 at 2014-07-27 23:32:50 -0400
  
  ActionController::RoutingError (No route matches [GET] "/stylesheets/application.css"):
    actionpack (4.0.3) lib/action_dispatch/middleware/debug_exceptions.rb:21:in `call'
    actionpack (4.0.3) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
    ...
  </code></pre>