doc: add arch install instructions

tombrk · tombrk · commit 1205ad91ebab · 2020-02-06T13:38:26.000+01:00
diff --git a/README.md b/README.md
@@ -67,6 +67,14 @@ Install and upgrade:
 1. Download the `.rpm` file from the [releases page][]
 2. `sudo yum localinstall gh_*_linux_amd64.rpm` install the downloaded file
 
+### Arch Linux
+
+Arch Linux users can install from the AUR: https://aur.archlinux.org/packages/gh/
+
+```bash
+$ yay -S gh
+```
+
 ### Other platforms
 
 Install a prebuilt binary from the [releases page][]
