title: Running Express route
body: <p>I have the following snippet of code and when I access the local host I get an error: Cannot GET /</p>
  
  <pre><code>var express = require('express');
  var router = express.Router();
  
  /* GET home page. */
  router.get('/', function(req, res, next) {
    res.send("function has started");
  });
  
  express().listen(3001);
  
  module.exports = router;
  </code></pre>