Documentation and site

# CLI and packaging
- [ ] Document the three uses:
- CLI and library - Include in other projects (e.g. Django, Celery) as a
useful conversion utility
- Ready-to-go server - Provide docker container to spin up behind nginx,
using env variables to configure, only providing a settings.py file if
necessary
- Web media conversion framework - In the manner of Django, Flask, etc have
a cookiecutter example of setting up an new project, and hooking in your
own Services and Converters

No files, tests, or entry points are named. Start by inventorying the existing CLI, library, Docker, nginx, and web-framework documentation and packaging setup, then clarify which of the three proposed uses is in scope and what documentation or examples would mark it complete.

Written by the indexing model from the issue text.