Add trademarks and license notice to README.md (#1217)

* Add trademarks notice

* Add license notice

Author: Aniruddh25

README.md

@@ -61,3 +61,11 @@ If you want to propose a completely new feature, please create an RFC item. Good
 - [Microsoft REST API Guidelines](https://github.com/microsoft/api-guidelines/blob/vNext/Guidelines.md)
 - [Microsoft Azure REST API Guidelines](https://github.com/microsoft/api-guidelines/blob/vNext/azure/Guidelines.md)
 - [GraphQL](https://graphql.org/)
+
+## License
+
+**Data API builder for Azure Databases** is licensed under the MIT license. See the [LICENSE](./LICENSE.txt) file for more details.
+
+## Trademarks
+
+This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow Microsoft's Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.