title: Adding a Total Row to Footer In ng-grid
body: <p>I can't seem to find documentation on how I might accomplish this.</p>
  
  <p>I'd like to add totals to the bottom of my grid, in the footer area (i.e. not a standard row that scrolls).  Since I am using paging, the totals will need to come from the server--I need the total of all rows, not just displayed rows.</p>
  
  <p>Is this possible?</p>