title: bootstrap 3 arrow on dropdown menu
body: <p>In bootstrap 2 the dropdown menu had an upwards arrow as it can be seen <a href="http://getbootstrap.com/2.3.2/javascript.html#dropdowns" rel="noreferrer">here</a>
  (i am not talking about the carret). Now using bootstrap 3 or latest git this arrow doesn't exist in my simple example bellow nor in the <a href="http://getbootstrap.com/javascript/#dropdowns" rel="noreferrer">examples</a> on the bootstrap homepage.</p>
  
  <p>How can I add this arrow again using bootstrap 3? </p>
  
  <pre><code>  &lt;li class="dropdown"&gt;
      &lt;a href="#" class="dropdown-toggle" data-toggle="dropdown"&gt;
        Menu
        &lt;b class="caret"&gt;&lt;/b&gt;
      &lt;/a&gt;
      &lt;ul class="dropdown-menu"&gt;
        &lt;li&gt;&lt;a href="#"&gt;a&lt;/a&gt;&lt;/li&gt;
        &lt;li&gt;&lt;a href="#"&gt;b&lt;/a&gt;&lt;/li&gt;
        &lt;li&gt;&lt;a href="#"&gt;c&lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
    &lt;/li&gt;
  </code></pre>
  
  <p>PS:To be precise the picture can be seen in <a href="https://stackoverflow.com/questions/15792132/bootstrap-remove-upward-arrow-in-dropdown">another</a> stackoverflow article.</p>