title: Logging to console from Firefox extension?
body: <p>I understand that I can log to the console when using a Firefox extension with the <code>cfx run</code> command. </p>
  
  <p>Is there a way to log to a console after the extension has been packaged with <code>cfx xpi</code>? Logging to Firebug is fine if possible.</p>
  
  <p>I have found two blog posts about this (<a href="http://www.timrosenblatt.com/blog/2008/07/23/firefox-extension-debugging/" rel="noreferrer">here</a> and <a href="http://markhansen.co.nz/firefox-extension-console/" rel="noreferrer">here</a>). Both are rather old and don't work any more.</p>
  
  <p>I'm using version 1.10 of the add-on SDK and FF15.</p>