Add link to AUR in the README

Author: morpheusthewhite

README.md

@@ -23,7 +23,9 @@ All server types on NordVPN site are available to be selected in the window.
 
 ## Installation and requirements
 
-For <b>Debian/Ubuntu</b>, <b>Fedora/Red Hat</b> and <b>Arch Linux</b> users:
+<b>Arch Linux</b> users can find this project on the [AUR](https://aur.archlinux.org/packages/nordpy/).
+
+For <b>Debian/Ubuntu</b>, <b>Fedora/Red Hat</b> users:
 
 To install all dependencies, download config files and to add a desktop entry in the main menu just run `install.sh`