title: Ruby on Rails 3 - Reload lib directory for each request
body: <p>I'm creating a new engine for a rails 3 application. As you can guess, this engine is in the lib directory of my application.</p>
  
  <p>However, i have some problems developing it. Indeed, I need to restart my server each time I change something in the engine.</p>
  
  <p>Is there a way to avoid this ?</p>
  
  <p>Can I force rails to completely reload the lib directory or a specific file and his requirements for each request ?</p>
  
  <p>Thanks for your help :)</p>