Update README

Author: qzed

README.md

@@ -2,3 +2,23 @@
 
 Control various aspects of Microsoft Surface devices on Linux from the Command-Line.
 Aims to provide a unified front-end to the various sysfs-attributes and special devices.
+
+## Building from Source
+
+Building this application from source follows the standard rust procedure, i.e. simply call `cargo build --release --locked` for a release-ready executable.
+Completion files are automatically generated and can be found in the corresponding `target/release/build/surface-<hash>/out/` directory.
+
+### Arch Linux
+
+You can generate a package using the provided PKGBUILD in the `pkg/arch` directory.
+
+### Debian
+
+Generating a Debian package can be done via [`cargo deb`](https://github.com/mmstick/cargo-deb).
+Specifically, you need to run
+```
+env CARGO_TARGET_DIR=target CARGO_INCREMENTAL=0 cargo deb
+```
+where setting `CARGO_TARGET_DIR` is required to output the generated auto-completion files at the correct location for cargo-deb to pick up.
+
+The final package can be found in `target/debian`.