title: grunt-nodemon didn't use nodemon to start server
body: <p>I use <code>express-generator</code> create the project skeleton, and use <code>jade</code>, <code>sass</code> instead of <code>ejs</code> and <code>stylus</code>, then i use <code>concurrent</code> to combine the <code>watch</code> and <code>nodemon</code> like <a href="https://github.com/ChrisWren/grunt-nodemon#advanced-usage" rel="nofollow">the doc</a>, but when i run grunt tasks, output is:</p>
  
  <hr>
  
  <p>[nodemon] v1.0.17<br>
  [nodemon] to restart at any time, enter <code>rs</code><br>
  [nodemon] watching: fir/<em>*</em>/*<br>
  [nodemon] starting <code>node bin/www</code><br>
  Express server listening on port 3000<br>
  mongodb connection open</p>
  
  <hr>
  
  <p>it's already use <code>node</code> to start server, How is it?</p>