Update README.md added license and contribution note (#14)

Author: huayra

README.md

@@ -28,3 +28,21 @@ A very understated feature of running directly on the CPU using hardware virtual
 
 Secondly, as CPUs evolve, so does TinyKVM. It never has to be updated, yet it will continue to run at native speeds on your CPU.
 
+
+## Licensing
+
+TinyKVM and VMOD-TinyKVM are released under a dual licensing model:
+
+- **Open Source License**: GPL‑3.0 (see [LICENSE](LICENSE)).
+- **Commercial License**: Available under terms controlled by Varnish Software.
+
+For commercial licensing inquiries, please contact:
+compliance@varnish-software.com.
+
+## Contributing
+
+We welcome contributions! By submitting a pull request or other contribution,
+you agree to our [Contributor License Agreement](CONTRIBUTOR_LICENSE_AGREEMENT.md)
+and our [Code of Conduct](CODE_OF_CONDUCT.md).
+
+For details on how to contribute, please refer to this document.