README: Add linux udev instructions

Signed-off-by: Daniel Schaefer <[email protected]>

README.md

@@ -187,9 +187,19 @@ qmk_hid via --rgb-effect 38
 
 ## Building from source
 
-Pre-requisites: Rust, libudev
+Pre-requisites:
+
+- [Rust](https://rustup.rs/)
+- libudev
 
 ```sh
 cargo build
 ls -l target/debug/qmk_hid
 ```
+
+# Running on Linux
+
+To avoid needing root privileges to access the keyboard please follow the
+official [QMK guide](https://docs.qmk.fm/#/faq_build?id=linux-udev-rules) for
+how to install udev rules. After doing that, you'll be able to interact with
+the keyboards as a regular user.