I would like to add a brightness slider to the top-bar, but am not able to figure out how to do this via System Settings -> Power -> Display Brightness. Unfortunately the SP2 keyboard does not have Fn buttons for this either.
I have tried this "Brightness Indicator" app, and it seemed to install fine, but it will not open:
EDIT: Never mind, found the brightness slider under the Battery icon drop-down menu. First day on the OS if you can't tell!