title: multiple routes not working with express
body: <p>So I am learning express, and I want to be able to make multiple routes. I've tried the following code on digital ocean and I get the message <code>Cannot GET /test</code> what am I doing wrong here?</p>
  
  <pre><code>var express = require('express');
  var app = express();
  
  app.get('/', function(req, res){
    res.send('main page');
  });
  
  app.get('/test', function(req, res) {
    res.send('test page');
  });
  
  app.listen(80);
  </code></pre>