title: Font Awesome 5 - why aren't icons like bitcoin, facebook, twitter showing?
body: <p>Is it only me that cannot render bitcoin and facebook icons in version 5.0.8 ? </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
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  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link rel="stylesheet" type="text/css" href="https://use.fontawesome.com/releases/v5.0.8/css/fontawesome.css"&gt;
  &lt;i class="fa fa-btc"&gt;&lt;/i&gt;
  &lt;i class="fa fa-bitcoin"&gt;&lt;/i&gt;
  &lt;i class="fa fa-facebook"&gt;&lt;/i&gt;
  &lt;i class="fa fa-facebook-f"&gt;&lt;/i&gt;</code></pre>
  </div>
  </div>
  </p>