Update greeter readme

Modules/Greetd/README.md

@@ -12,6 +12,31 @@ A greeter for [greetd](https://github.com/kennylevinsen/greetd) that follows the
 
 ## Installation
 
+### Arch Linux
+
+Arch linux users can install [greetd-dms-greeter-git](https://aur.archlinux.org/packages/greetd-dms-greeter-git) from the AUR.
+
+```bash
+paru -S greetd-dms-greeter-git
+# Or with yay
+yay -S greetd-dms-greeter-git
+```
+
+To sync wallpapers, colors, and other settings from the logged in user, you can add your user to the `greeter` group and symlink the shell configurations.
+
+```bash
+sudo usermod -aG greeter <username>
+# LOGOUT and LOGIN after adding user to group
+
+
+ln -sf ~/.config/DankMaterialShell/settings.json /var/cache/dms-greeter/settings.json
+
+ln -sf ~/.local/state/DankMaterialShell/session.json /var/cache/dms-greeter/session.json
+: 1760127136:0
+
+ln -sf ~/.cache/quickshell/dankshell/dms-colors.json /var/cache/dms-greeter/colors.json
+```
+
 ### Automatic
 
 The easiest thing is to run `dms greeter install` or `dms` for interactive installation.
@@ -32,7 +57,7 @@ sudo chmod +x /usr/local/bin/dms-greeter
 ```bash
 sudo mkdir -p /var/cache/dms-greeter
 sudo chown greeter:greeter /var/cache/dms-greeter
-sudo chmod 770 /var/cache/dms-greeter
+sudo chmod 750 /var/cache/dms-greeter
 ```
 6. Edit or create `/etc/greetd/config.toml`:
 ```toml