title: NightmareJs goto after evaluate
body: <p>I don't really get nightmarejs so it's probably really simple.<br>
  My question is why app is stuck on Facebook url and doesn't go to Google?</p>
  
  <pre><code> var Nightmare = require('nightmare');
   var nightmare = Nightmare({ show: true });
  
   nightmare
     .goto('https://facebook.com')
     .evaluate(function () {
         return document.title;
       }
     )
     .then(function(result){
       console.log(result)
       nightmare.goto('https://google.com')
     })
  </code></pre>