change license, enhance readme with libraries and resolved comments suggested by team

Author: jefferyann-db

CONTRIBUTING.md

@@ -32,4 +32,4 @@ If you are contributing on behalf of an organization, you confirm that you have
 16. Support `pip install databricks-python-data-source[<shortname>]` where user selects individual connectors to install, avoid pulling in a mass of dependencies their use case doesn't need.
 17. Support installing from github.
 18. Support running after creating a github folder in Databricks.
-19. In connector README.md, and demo notebook, please document compute requirements and other environmental requirements.
+19. In connector README.md, and demo notebook, please document compute requirements and other environmental requirements.