Update README.md

Author: Krzyzyk33

README.md

@@ -5,7 +5,8 @@ A local terminal AI assistant based on GGUF and llama‑cpp‑python models.
 No cloud. Complete privacy.
 
 ## 🎥 Demo
-coming soon....
+
+[![Zobacz demo](assets/preview.png)](https://krzyzyk33.github.io/CMDAI/CMDAIDEMO.html)
 
 ## ⚙️ Functions
 
@@ -124,4 +125,5 @@ CMD LOCAL AI is a project being developed step by step. Below are the directions
 
 
 
+