Enhance README: add ✨ emoji to Overview heading and include a License section.

Author: Paweł Kędzia

README.md

@@ -1,6 +1,6 @@
 # llm_router_services
 
-## Overview
+## ✨ Overview
 
 `llm_router_services` provides **HTTP services** that implement the core functionality used by the LLM‑Router’s plugin
 system.  
@@ -20,4 +20,10 @@ The services are **stateless**; they load their models once at start‑up and th
 
 ---
 
+## 📜 License
+
+See the [LICENSE](LICENSE) file.
+
+---
+
 *Happy masking and safe routing!*