Adding mobile-only show/hide toggle button to your navigation with Twitter Bootstrap

gistfile1.html

<!-- I noticed that Twitter Bootstrap has a feature to make your navigation work on mobile. 
It just appears that the documentation is missing for it. 

Take the navigation bar and then add a toggle button and wrap the navigation list in '.nav-collapse'.
-->
<nav class="navbar navbar-fixed-top">
  <div class="navbar-inner">
    <div class="container">
      <!-- Add toggle button -->
      <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </a>
      <a class="brand" href="/">Branding</a>
      <!-- Wrap the navigation list in .nav-collapse -->
      <div class="nav-collapse">
        <ul class="nav" role="navigation">
          <li><a href="/">Overview</a></li>          
          <li><a href="/about">About</a></li>
          <!-- ... -->
        </ul>
      </div>
    </div>
  </div>
</nav>