title: Polymorphic Eloquent relationships with namespaces
body: <p>I've tried to implement polymorphic relationships. They work perfectly... However, I'm trying to reduce my database size as much as possible so... I've this</p>
  
  <pre><code>Table action
  |  id  |  realatable_type  |  relatable_id
  |  1   |  Lion\People      |  65
  |  2   |  Lion\Company     |  13
  </code></pre>
  
  <p>Obviously I've this</p>
  
  <pre><code>&lt;?php namespace Lion;
  
  class Company extends \Eloquent { ... }
  class People extends \Eloquent { ... }
  </code></pre>
  
  <p>Is there any way to store only "People" or "Company" assuming that the namespace is always going to be "Lion"?</p>