<ul class="nav navbar-nav navbar-right">
            <li class="active"><a href="#about">About Me</a></li>
            <li><a href="#portfolio">Portfolio</a></li>
            <li><a href="#contact">Contact Me</a></li>
          </ul>
-------------------------------------------------------------------------
$(document).ready(function() {
  $('.nav li a').click(function() {

       $('.nav li').removeClass('active');
       $(this).addClass('active');
  });
});