more docs

README.md

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 # Fedora Atomic Hyprland image
 
 This is a bootable image of Fedora Atomic Sway with the latest Hyprland Window Manager built and installed.
+
+The image includes no hyprland config, so you should prepare that in your home directory before switching.
+
+## Install bootc
+
+    rpm-ostree install bootc
+
+Reboot into this new layer.
+
+## Switch to this image
+
+I suggest pinning your current layer as a backup.
+
+    sudo ostree admin pin 0
+
+Then fetch this image and switch to it.
+
+    sudo bootc switch ghcr.io/stemid/fedora-atomic-hyprland:latest
+
+Reboot and select this new layer in Grub to test it.