create a requirements file for non SageMaker users

specifically requirements for the notebook to run examples when running locally. I needed pandas, pickleshare, notebook, etc

@rppth

The issue names no specific notebook or requirements file; first locate the notebook and inspect its imports, including pandas, pickleshare, and notebook. Done means a requirements file covers the dependencies needed to run the local examples outside SageMaker and the notebook runs locally.

Written by the indexing model from the issue text.