title: Accessibility for button with font icon in it
body: <p>I'm having an accessibility problem with the button element. I'm wondering if this is the good way to do it. I have a button and the only content is a Font-Awesome (font-icon) in it. I was wondering if adding a <code>title</code> attribute to my button was enough to make it accessible ?</p>
  
  <p>Like this:</p>
  
  <pre><code>&lt;button class="prev" title="My accessible title"&gt;
     &lt;i class="fa fa-chevron-circle-left"&gt;&lt;/i&gt;
  &lt;/button&gt;
  </code></pre>