title: How to start WEBrick in a different port than 3000
body: <pre><code>[2011-09-11 06:14:12] INFO  WEBrick::HTTPServer#start: pid=32723 port=3000
  </code></pre>
  
  <p>How to start WEBrick in a different port than 3000, is there a way to specify this information in a config file instead of the command line argument ("-p")</p>