title: How to set a node server to run even after closing putty?
body: <p>when am trying forever server.js its showing warning messages as 
  warn:    --minUptime not set. Defaulting to: 1000ms
  warn:    --spinSleepTime not set. Your script will exit if it does not stay up for at least 1000ms</p>
  
  <p>how to overcome this and keep my server on forever?</p>