Lint and refactor

[kgarwoodsdzwa]

In preparation for Earthranger integration, code must be linted and readme's updated.

[iingram]

Here are some of the things we want to achieve in this issue:

1. code passes flake8
2. code passes pylint
3. updating of README to reflect how things currently work
4. some possible renaming of modules (and maybe other identifiers) to reflect changes that have occurred in how the project is organized
5. some refactoring on how we use our AniML package in CougarVision
6. further updating of the README based on what we do in steps 4 and 5

The above are in pretty good order for how we should tackle them. More specifically, I think we should start with the web_scraping.py module and work towards it passing flake8 and pylint and then start looking at other parts of the project.

[iingram]

We hadn't discussed this yet and are basically doing it but to state it outright, this issue is focused on "CougarGram" which is to say the camera trap part of CougarVision i.e. not the streaming IP camera part. So, that is fetch_and_alert.py and all the bits it depends on. This also brings up the question of whether fetch_and_alert.py should itself be renamed to cougargram.py or some other name that we come up with instead.