Update repo for maintainability

[willingc]

Evolving code bases often need some "cleaning" to help the repo be understandable and maintainable by future contributors. This issue will track the series of steps to be taken while cleaning.

Phase 1

Update repo root for maintainability:

• [x] Simplify README for readability
  • Add badges
  • Create sections that would be expected
  • Update title to reflect that the repo will be renamed in the future to the pyosmeta to match the package name
• [x] Create a CONTRIBUTING.md file and move usage instructions from existing README to it
• [x] Create a CODE_OR_CONDUCT.md file and add text to refer to the pyOpenSci CoC page
• [x] Create a CHANGELOG.md file which will contain a badge to PyPI for first iteration
• [x] Create a LICENSE file at the repo root for MIT license with content from src/LICENSE.txt and drop the .txt suffix
• [x] Remove src/LICENSE.txt and src/README.md

Phase 2

• [x] Review the development tools config (flake8, recommit, gitignore, etc.)

Phase 3

• [ ] Correct any errors surfaced by running code inspectors

Phase 4

• [ ] Add module/file docstrings
• [ ] Review function, class, and public method docstrings and edit as needed

Phase 5

Begin code enhancements such as adding a CLI that allows running: pyosmeta <task> <commandline>

[willingc]

@lwasser We'll be pairing on this with you doing the bulk of the PR reviews.

[lwasser]

@all-contributors please add @willingc for code, review

[allcontributors[bot]]

@lwasser

I've put up a pull request to add @willingc! :tada:

[lwasser]

yes please @willingc

excited to work on this with you! i also just added two other issues that will improve the package's infrastructure. i'll do a better job of updating the changelog as well from now on. because i've been the only person working on this, I know it's missing a lot of core package elements. I appreciate getting to work with you on this!

[willingc]

Closing this since I think we will cover Phase 3, 4, and 5 during incremental refactor of the repo.