title: Add new path to nodejs server
body: <p>I've created the following nodejs server:</p>
  
  <pre><code>var http = require('http');
  
  var serverFunction = function(req, res) {
      if (req.url === '/') {
          //does something
      }
  }
  
  http.createServer(serverFunction).listen(3000);
  </code></pre>
  
  <p>And now I want to add another path (example: /hello), but I don't want to change serverFunction. </p>
  
  <p>How can I do that?</p>