chore: revamp README (#126)

docs/licensing.md

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+# Licensing
+
+Task Master is licensed under the MIT License with Commons Clause. This means you can:
+
+## ✅ Allowed:
+
+- Use Task Master for any purpose (personal, commercial, academic)
+- Modify the code
+- Distribute copies
+- Create and sell products built using Task Master
+
+## ❌ Not Allowed:
+
+- Sell Task Master itself
+- Offer Task Master as a hosted service
+- Create competing products based on Task Master
+
+See the [LICENSE](../LICENSE) file for the complete license text.