Update README.md

Added Karpathy's well-earned credentials.

README.md

@@ -18,7 +18,8 @@ spaces:
 
 # PicoChat
 
-**PicoChat** is a 335M parameter language model trained entirely from scratch on a MacBook Air M2 (16GB RAM) in approximately 6 days.
+**PicoChat** is a 335M parameter language model trained entirely from scratch on a MacBook Air M2 (16GB RAM) in approximately 6 days. The code is based on Andrej Karpathy's 
+[NanoChat](https://github.com/karpathy/nanochat) and was updated to run at M2 MacBook Air at [PicoChat](https://github.com/MichalGow/PicoChat).
 It serves as a "lab notebook" proof-of-concept for training capable small language models (SLMs) on consumer hardware using pure PyTorch and MPS (Metal Performance Shaders).
 
 > **Links:**
@@ -77,7 +78,7 @@ The model was trained in three phases using the [nanochat](https://github.com/ka
 
 ## Usage
 
-This model requires the [nanochat](https://github.com/MichalGow/PicoChat) library to run, as it uses a custom architecture implementation optimized for educational clarity and hackability.
+This model requires the [picochat](https://github.com/MichalGow/PicoChat) library to run, as it uses a custom architecture implementation optimized for educational clarity and hackability.
 
 ## License