chore: update README.md

Author: AdamFrydrychRST

README.md

@@ -146,4 +146,17 @@ yarn lint
 yarn test
 ```
 
-or with proper envs: `POSTGRES_USER=yourtestuser POSTGRES_DATABASE="database_test" yarn test`
+or with proper envs: `POSTGRES_USER=yourtestuser POSTGRES_DATABASE="database_test" yarn test`
+
+## License
+
+AdminJS is copyrighted © 2023 rst.software. It is a free software, and may be redistributed under the terms specified in the [LICENSE](LICENSE.md) file.
+
+## About rst.software
+
+<img src="https://pbs.twimg.com/profile_images/1367119173604810752/dKVlj1YY_400x400.jpg" width=150>
+
+We’re an open, friendly team that helps clients from all over the world to transform their businesses and create astonishing products.
+
+* We are available for [hire](https://www.rst.software/estimate-your-project).
+* If you want to work for us - check out the [career page](https://www.rst.software/join-us).