Merge pull request #142 from bepetersn/v2.0-dev

Fixed relative imports by making them explicit; removed sys.path alterations
removed Person model as it is not it first vertical slcie.
cleaned up app.py versioning info
Merge branch 'v2.0-dev' of https://github.com/sc3/cookcountyjail into v2.0-dev
made flask app runnable with gunicorn server
re-added nginx.conf to v2.0
fixed gunicorn script error, updated reqs to include gunicorn, as will be necessary moving to flask, and wrote small section of README to show how to use the production servers for testing.