title: updating an ng-grid cell
body: <p>I'm displaying an ng-grid and I would like to change a particular cell's content based on an update.  I don't want to make the cell editable.  I'm instead popping up a dialog when they click on a Row.  When they submit the data, I update the db using ajax, but I don't want to refresh the page.  I'd like to update the cell to say something like "Updated".  I haven't found anything in documentation or examples that would allow me to modify a particular cell on the fly.  Anybody wanna point me in a right direction?</p>