title: winston:how to change timestamp format
body: <p>I am using winston to add log details in node.js, i used the following procedure to add the logs</p>
  
  <pre><code> var winston = require('winston');         
   winston.remove(winston.transports.Console);
   winston.add(winston.transports.Console, {'timestamp':true,'colorize':true);
   winston.log('info','jjjj');
  </code></pre>
  
  <p>the output that i got is</p>
  
  <pre><code>2012-12-21T09:32:05.428Z - info: jjjj
  </code></pre>
  
  <p>I need to specify a format for mytimestamp , is there any provision to do so in winston any help will be much appreciated</p>