title: rails 4: put models in subdirectories but without namespacing ( only to organise )
body: <p>What would be the way to do this in rails 4?</p>
  
  <p>For Rails 3 this works:</p>
  
  <pre><code>config.autoload_paths += Dir[ Rails.root.join('app', 'models', '**/') ]
  </code></pre>
  
  <p>But in Rails 4 it fails complaining about namespacing non existent ( like 
  <code>app/models/users/credits.rb</code> gives error </p>
  
  <pre><code>Unable to autoload constant User::Credits, expected
  </code></pre>