title: Gridstack - Add new widgets with content
body: <p>So, I have been playing with Gridstack and was wondering if there was a guide on how to add content to a newly added widget.</p>
  
  <p>I have tested the example that adds a widget on button click. [Knockout.js demo][1] [1]: <a href="http://troolee.github.io/gridstack.js/demo/knockout.html" rel="nofollow">http://troolee.github.io/gridstack.js/demo/knockout.html</a> which works fine but what I would like to do is add multiple buttons each adding a new widget with separate content. The content is just a DIV ID to some other JS.</p>
  
  <p>Thanks</p>