title: Change slickgrid cell data after edit
body: <p>I'm using Slickgrids with alot of success. I have ajax edits all working - but I'm trying to add a piece of functionality;</p>
  
  <p>Below is my code which allows me to update cells - it works as intended - but I want to be able to change the cell after it has been editted with the returned value from the json data. See my code below - I have put in capitals where I need a command to update the editted cell with the new returned data</p>
  
  <pre><code>    grid.onCellChange.subscribe(function(e, args) {
                    var dataString = "col="+grid.getColumns()[args.cell].name+"&amp;row="+args.item.new_training_calendar_id+"&amp;value="+data[args.row][grid.getColumns()[args.cell].field];
  
                  $.ajax({
                      type: "POST",
                      url: "mydomain/update_cell",
                      data: dataString, dataType: "json",
                  success: function(a) { 
                          if(a.status != "ok") { 
                               alert(a.msg); 
                               undo(); 
                             } else {
                               alert(a.msg);
                               **CHANGE_CELL_HERE TO (a.newdata);**
                              }
                       return false;
                 } }); });
  </code></pre>