readme: document a bit better how to build & install manually

README.md

@@ -44,15 +44,17 @@ Use one of the available packages and methods below:
 - Alpine Linux: [wluma](https://pkgs.alpinelinux.org/packages?name=wluma) (from Alpine Edge; it will be available in stable branches since Alpine v3.16)
 - Arch Linux: [wluma](https://aur.archlinux.org/packages/wluma/) or [wluma-git](https://aur.archlinux.org/packages/wluma-git/)
 - NixOS: [wluma](https://search.nixos.org/packages?channel=unstable&show=wluma&from=0&size=50&sort=relevance&type=packages&query=wluma)
-- Build the app yourself using the instructions below and install it via `sudo make install`
+- Build the app yourself using the instructions below and copy the resulting binary somewhere in your `$PATH`.
+  - optionally, grab the `wluma.service` if you want to run it as a systemd-service - it can be placed e.g. in `~/.config/systemd/user/`.
+  - you might need `90-wluma-backlight.rules` too, if you want to give `wluma` direct driver access for the fastest performance (see "Permissions" section below) - it can be placed e.g. in `/etc/udev/rules.d/`.
 
 ## Build
 
 [![CI](https://github.com/maximbaz/wluma/actions/workflows/ci.yml/badge.svg)](https://github.com/maximbaz/wluma/actions/workflows/ci.yml)
 
 If you want to build the app yourself, make sure you use latest stable Rust, otherwise you might get compilation errors! Using `rustup` is perhaps the easiest. Ubuntu needs the following dependencies: `sudo apt-get -y install v4l-utils libv4l-dev libudev-dev libvulkan-dev libdbus-1-dev`.
 
-Then simply run `make build`.
+Then simply run `carbo build --locked --release` and the binary will be placed into `./target/release/wluma`.
 
 ## Permissions