title: Ruby on Rails, how to setup hot swap for lib folder?
body: <p>My models are becoming bigger and bigger (fat model thin controller approach) so I am making more and more modules (e.g. /lib/user/*).</p>
  
  <p>Problem is that they don't get re-deployed so each time I have to restart Webrick. </p>
  
  <p>How to set "hot swap" for lib folder?</p>
  
  <p>Thank you, and generally is that good practice since it is not enabled by default.</p>