Add AUR PKGBUILD.
Add AUR PKGBUILD.

Closes #28.

temochka/pick,thoughtbot/pick,calleerlandsson/pick,calleerlandsson/pick,DBOTW/pick,temochka/pick,GBuella/pick,thoughtbot/pick,thoughtbot/pick,prahlad37/pick,prahlad37/pick,DBOTW/pick,prahlad37/pick,calleerlandsson/pick,thoughtbot/pick,DBOTW/pick,prahlad37/pick,GBuella/pick