Different AUR helper

yaourt has many security issues, but being one of the most well known people keep using it...replacing with an improved AUR helper.

README.md

@@ -45,7 +45,7 @@ The scripts is now running with Python3 by default (tested w/ 3.6) and a virtual
 
 ### Arch Linux [AUR package](https://aur.archlinux.org/packages/lenovo-throttling-fix-git/):
 ```
-yaourt -S lenovo-throttling-fix-git
+yay -S lenovo-throttling-fix-git
 sudo systemctl enable --now lenovo_fix.service
 ```
 Thanks to *felixonmars* for creating and maintaining this package.