Add a bit more info

README.md

@@ -7,6 +7,15 @@ This flake is largely derived from my own custom [CDDA experimental flake](https
 
 (WIP) Documentation in-progress.
 
+## Bundled contents
+
+### extras
+- Tankmod_Revived
+- jackledead_armory + jackledead_armory_expansion
+
+### expanded
+All in `extras` + Otopacks soundpack.
+
 ## Install or run
 
 ### Install remotely
@@ -17,6 +26,8 @@ and run `cbn-tiles-launcher` to play.
 ### Run remotely
 `nix run --refresh github:cloudyluna/cbn-custom-flake#extras` to just run quickly.
 
+If you want music too, replace `#extras` with `#expanded`.
+
 ## User folder
 Saves are located in `$HOME/.cbn-custom`.