updates README

Author: wkelton

README.md

@@ -4,8 +4,18 @@ This is a fork of the deej project to maintain tweaks required for easy use on L
 
 ## Changes
 - Tweak for apps whose audio goes through pipewire
+- Updated go packages
+- Support for $XDG_CONFIG_HOME/deej/config.yaml
+- Configurable adc_size
+- config.yaml with linux-sensible defaults
 - Build scripts place executables in `install` directory
 
+## Requirements
+You'll need the permissions to access the serial device. Something like:
+```
+sudo usermod -aG dialout <username> # requires re-login
+```
+
 ## Building
 
 See [build/README.md](./build/README.md)