Revise README for Meshtastic Bot details

Updated project description and usage instructions.

README.md

@@ -1,2 +1,19 @@
-# MeshtasticBot
-Minimal Meshtastic TCP bot that replies to direct text commands like ping, mail, info, and help — simple, extendable, and logs all actions.
+### 🛰️ Meshtastic Bot
+
+A minimal Python-based Meshtastic bot that connects via TCP to your radio (e.g., `192.168.0.156:4403`).
+It listens for direct text messages and responds to simple commands like:
+
+* `ping` → replies with `pong` and signal stats (SNR, RSSI, hops)
+* `mail` → shows mail command help
+* `info` → displays bot info
+* `help` → lists available commands
+
+All actions are logged to **`meshtastic_bot.log`** and printed in the console.
+Easily extendable with new commands via the clean handler structure.
+
+**Run:**
+
+```bash
+pip install meshtastic pypubsub
+python meshtastic_bot.py
+```