AUR PKGBUILD script

[rainloreley]

Hey, I saw some other issues here mentioning other install methods (#424, #118), so I decided to create a PKGBUILD script to build and install Keyguard on Arch Linux. It's published on the AUR (Arch User Repository) for others to install.

You can close this issue (because there's nothing to do), just letting you (and others) know that this is also available now. I didn't want to add the link to the readme or somewhere else myself, but you can do that if you want to.