title: delete rows based on checkbox selection in slickgrid
body: <p>i am taking help of this example: <a href="http://mleibman.github.com/SlickGrid/examples/example-checkbox-row-select.html" rel="nofollow">http://mleibman.github.com/SlickGrid/examples/example-checkbox-row-select.html</a> and add a checkbox column to my grid and assign unique_id value of my record to the id of checkbox column i am getting checked columns number using <code>grid.getSelectedRows();</code> 
  it gives me a index number of row. how can i get id of this selected rows in slickgrid? please help me if anyone have any idea.</p>