archlinux: extend readme

Author: mwarning

archlinux/README.md

@@ -2,19 +2,36 @@
 
 To create an [Archlinux](https://www.archlinux.org) package of KadNode (a \*.pkg.tar.xz file).
 
+Install dependencies:
+
+```
+sudo pacman -S gcc make fakeroot debugedit miniupnpc libnpupnp
+```
+
 Run these commands in the repository root folder to create the package:
 
 ```
 cd archlinux
 makepkg
 ```
 
-The package kadnode-git-\*.pkg.tar.xz will be created.
+The package `kadnode-git-*.pkg.tar.zst` will be created.
 
 To install the package, use:
 
 ```
-pacman -U kadnode-*.pkg.tar.xz 
+pacman -U kadnode-*.pkg.tar.zst
+```
+
+Now you can start Kadnode:
+
+```
+systemctl start kadnode
+```
+
+Or stop:
+```
+systemctl stop kadnode
 ```
 
 To remove the package, use: