title: How to change the page url
body: <p>I am building a shopping cart using backbone.js . When some one clicks on 'add to cart' I am making an ajax call using jQuery. Backend is rails. In response I get the new json value for the cart. However if I display the cart view then car view comes up , however the url does not change.</p>
  
  <p>To make the url change I after receiving the response from jQuery I need to do something so that router catches the new url and things proceed from there.</p>
  
  <p>How do I navigate to the <code>#cart</code> url?</p>