title: how to use Glyphicons in bootstrap 4 and angular2?
body: <p>I am doing an app with angular-cli and bootstrap4, but when I do some references to Glyphicons, the icons don´t appear. For example, when I add the following code:</p>
  
  <pre><code>&lt;button type="button" class="btn btn-default btn-lg"&gt;
    &lt;span class="glyphicon glyphicon-star" aria-hidden="true"&gt;&lt;/span&gt; Star
  &lt;/button&gt;
  </code></pre>
  
  <p>I did the bootstrap installation in my angular project with:</p>
  
  <pre><code>$ npm install --save bootstrap@4.0.0-alpha.6
  </code></pre>
  
  <p>I should make any extra step to have the Glyphicons in bootstrap? Do I should install another npm package specific for Glyphicons?</p>