title: propel generated peer and query filename
body: <p>I added propel library in my codeigniter project
  Codeigniter 2.1.3 Propel 1.6.7
  but apparently as propel users know it generates camelcase names</p>
  
  <p>ex. UsersQuery.php UsersPeer.php</p>
  
  <p>but codeigniter wont accept camelcase names when executing </p>
  
  <pre><code>$this-&gt;load-&gt;model('UsersQuery');
  </code></pre>
  
  <p>does anyone know how to change generated propel model class to lowercase filenames?
  because if i will just rename each file, i will do it everytime i generate classes and it's not efficient.</p>