Update README.md (#134)

README.md

@@ -27,11 +27,15 @@ wgkex is a WireGuard key exchange and management tool designed and run by FFMUC.
 WireGuard Key Exchange is a tool consisting of two parts: a frontend (broker) and a backend (worker). These components
 communicate to each other via MQTT - a messaging bus.
 
-<picture>
-  <source media="(prefers-color-scheme: dark)" srcset="Docs/architecture-dark.png">
-  <source media="(prefers-color-scheme: light)" srcset="Docs/architecture.png">
-  <img src="Docs/architecture.png" alt="Architectural Diagram">
-</picture>
+```mermaid
+graph TD;
+	A{"client"} -->|"RESTful API"| G("WGKex Broker")
+	G -->|"publish"| B("Mosquitto")
+	C("WGKex Worker") -->|"Subscribe"| B
+	C -->|"Route Injection"| D["netlink (pyroute2)"]
+	C -->|"Peer Creation"| E["wireguard (pyroute2)"]
+	C -->|"VxLAN FDB Entry"| F["VXLAN FDB (pyroute2)"]
+```
 
 ### Frontend broker