Create LICENSE

Adding setup screencast to the README.

Updating README with Colab and SageMaker instructions.

Improve advanced RAG diagram.

Adding link to online course on edX.

Adding Hybrid Search Exercise.

Adding Hybrid Search Exercise

Improved setup instructions.

Cleanup requirements and dot_env usage.

Adding dot_env to embedding notebook.

Clean up requirements, adding README for local execution, and dot_env support.

Further cleanup of requirements for colab.

Removing open-webui from requirments.

Show sample page image and remove wrong file name from exercise.

Cleaner version of exercise notebook.