title: r.g is undefined in graphael?
body: <p>Based on the graphael documentation I am supposed to draw charts like this:</p>
  
  <pre><code>var r =Raphael('blah');
  var chart = r.hbarchart(...);
  </code></pre>
  
  <p>Then I attempted to add a gradient and saw people doing like this:</p>
  
  <pre><code>var r = Raphael('blah');
  var chart = r.g.hbarchart(...);
  
  chart.shades[0].attr({...});
  </code></pre>
  
  <p>I tried:</p>
  
  <pre><code>chart.shades[0].attr({...});
  </code></pre>
  
  <p>but the browser complained that chart.shades is undefined. So I decided maybe if I change <code>r.hbarchart({...});</code> into <code>r.g.hbarchart({...});</code> it will work.</p>
  
  <p>However, now it says r.g is undefined. </p>