Add requirements.txt

[tompollard]

It would be helpful to add a requirements.txt file to the repo to list packages that need to be installed to run the code in the repo. The packages can then be quickly installed with pip install -r requirements.txt.

It looks like you are currently using pandas and numpy, so you could:

• run pip freeze to print a list of your installed packages
• copy the pandas and numpy lines and add them to the requirements file