Add thanks

Author: ResurrectedTrader

README.md

@@ -19,6 +19,11 @@ A C# library for reading and writing Diablo 2 save files (.d2s character saves a
 
 This project was vibe coded with [Claude](https://claude.ai).
 
+Special thanks to:
+- [D2MOO](https://github.com/ThePhrozenKeep/D2MOO)
+- dschu012 for [d2s](https://github.com/dschu012/d2s)
+- Killshot
+
 ## Installation
 
 ```bash