Add Documentation Generation

[bhgrant8]

Detailed Description

Project repo will need to include useful documentation about what the project is, it's source data, and how to implement methods. This will include OpenAPI/Swagger documentation of API endpoints, readme around context/quickstart/contribution guidelines, as well as actual pythondocs. Allowing teams to autogenerate documentation based on docstrings and readmes, would aid in process

Context

This would aid developers in creating documentation in an efficient manner

Possible Implementation

While sphinx appears to be the most complete option, including docstring support, it appears that using markdown vs. rst may cause some issues? mkdocs would be additional option,.
DRF can autogenerate the openapi

Your Environment

• Version (https://github.com/hackoregon/2019-backend-cookiecutter-django/releases):
• Operating System and version:
• Link to your project:
  n/a