[add] Reference to Infocom game engine

.vscode/settings.json

@@ -11,6 +11,7 @@
         "Infocom",
         "INTEGRALBIT",
         "ldesc",
+        "libportaudio",
         "LIGHTBIT",
         "MUNGEDBIT",
         "NARTICLEBIT",
@@ -19,10 +20,13 @@
         "OPENBIT",
         "OPENWOLF",
         "OUTSIDEBIT",
+        "pipwin",
+        "portaudio",
         "prosser",
         "prsa",
         "prsi",
         "prso",
+        "pyaudio",
         "pycache",
         "READBIT",
         "REVISITBIT",

README.md

@@ -96,7 +96,7 @@ The Earth opening sequence: wake up in your bedroom, find your gown and aspirin,
 
 ## Project structure
 
-```
+```text
 h2g2/
     engine/          # Core game engine (parser, object model, game loop)
     content/         # Game content (rooms, objects, puzzles)
@@ -104,3 +104,10 @@ h2g2/
 *.zil                # Original ZIL source code (Infocom, 1984)
 docs/                # Original game manuals, maps, and story file (.z5)
 ```
+
+---
+
+## Additional information Infocom Games
+
+- Library of all Infocom games https://eblong.com/infocom/
+- Open source Z-file game engine: https://gitlab.com/DavidGriffith/frotz