title: Enabling websockets support in packaged mosquitto 1.4.7
body: <p>How is websocket support enabled in mosquitto 1.4.7 when it's installed via a package manager (apt-get install mosquitto)? I see there is support for it, but I cannot determine how to enable it (and set the port) in configuration. There is an article that seems to indicate it can be enabled when built from source (<a href="https://goochgooch.wordpress.com/2014/08/01/building-mosquitto-1-4/" rel="nofollow">https://goochgooch.wordpress.com/2014/08/01/building-mosquitto-1-4/</a>). </p>
  
  <p>Is building from source the only option to enable websocket support?</p>