add ices2 sample config block

README.md

@@ -20,6 +20,15 @@ This prints the selected file path to stdout and broadcasts the now‑playing in
 ### Track list format
 A plain text file with one absolute file path per line.
 
+### ices2 config
+```xml
+<input>
+    <module>playlist</module>
+    <param name="type">script</param>
+    <param name="program">ICYWS_TRACKLIST=/etc/ices2/playlist.txt /usr/local/bin/icyws</param>
+</input>
+```
+
 ### WebSocket endpoint
 Connect to: `/ws/radio`
 Receives: `Artist - Title` whenever a new song is selected