title: Node.js TypeError: connect ECONNREFUSED 127.0.0.1:3000
body: <p>I am trying to use zombie.js to log into a site but I keep on getting this error. </p>
  
  <p><code>TypeError: connect ECONNREFUSED 127.0.0.1:3000</code></p>
  
  <p>I think that it has something to do with the websites security but I'm not for sure. Here is the code that I am using.</p>
  
  <pre><code>const Browser = require('zombie');
  Browser.localhost('test.com', 3000);
  describe('User visits signup page', function() {
  const browser = new Browser();
  before(function(done) {
      browser.visit('/', done);
  });
  describe('submits form', function() {
      before(function(done) {
          browser
          .fill('Username', '*******')
          .fill('password', '*******')
          .pressButton('Submit', done);
      });
      it('should be successful', function() {
          browser.assert.success();
      });
      it('should see welcome page', function() {
          browser.assert.text('title', 'Welcome To Brains Depot');
      });
    });
  });
  </code></pre>