SuperTool README.md : a use for the result.add_row()

[emyoulation]

https://github.com/Taapeli/isotammi-addons/blob/master/source/SuperTool/README.md#the-result-object

When the result rows exceed the vertical AND horizontal scrollbars appear, the hotspot region of the horizontal scrollbar can make the bottom row fussy to select.

So when results exceed the size of both horz. and vert. space, a padding add_row() is helpful. Although a padding row any time there are results could be helpful. (A blank space at the bottom of a scrolling list is a visual indicator that you are at end of list.