How do I actually install plugins?

[tiltowaitt (tiltowait)]

I want to use DualUse. How do I actually install it? I already have (and have been modifying) the official firmware.

[algernon (Gergely Nagy)]

If you have modified and successfully compiled the factory firmware, you already have DualUse available, as it is part of the Arduino-Boards repo. All you need to do, is include the header, and use it.