Update start.html (jgthms#529)

Author: diomed

docs/documentation/overview/start.html

@@ -62,7 +62,7 @@ <h2 class="subtitle">You only need <strong>1 CSS file</strong> to use Bulma</h2>
       <div class="message-body">
         <p>If you want to use icons with Bulma, don't forget to include <a href="https://fortawesome.github.io/Font-Awesome/">Font Awesome</a>:</p>
 {% highlight html %}
-<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">
+<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
 {% endhighlight %}
       </div>
     </div>