title: Loading custom shape with json in kinetic js
body: <p>How can I load a custom shape ( such as <a href="http://www.html5canvastutorials.com/kineticjs/html5-canvas-kineticjs-shape-tutorial/" rel="nofollow">http://www.html5canvastutorials.com/kineticjs/html5-canvas-kineticjs-shape-tutorial/</a>) with a Json file through Kinetic JS.</p>
  
  <p>I managed to load normal shapes but for this one there's no documentation.</p>