This is a very simple addon to help you avoid those occasions where you really wish you'd grabbed a screenshot of the final scores from a battleground before leaving.
All it does is trigger a screenshot a few seconds after the "The <faction> wins!" or "Tie game!" chat message happens, during which it attempts to set the scoreboard to show both factions, and sort by honor gained (the default, although you can change this using the /bgss slash command, and that setting will remain for all characters on the account).
WARNING: Make sure you are familiar with where your screenshots are stored, how to delete them, and have sufficient space for them, especially if you play a lot of battlegrounds, or run the game at a high resolution.