Smash-tourney

Changed
- Default to saving `wav` files instead of `mp3` files. They can be manipulated in pure Python, no external dependency necessary.

Added
- `versus.wav` auto-generation if no file found in directory.
Changed
- Renamed project to "smash-tourney".
- Release on PyPI.

Added
- Basic testing.
- Travis CI support.
- Coveralls support.
- `black` formatting.
- `isort` formatting.
- MANIFEST.in and other `setup.py` related files.
- Cute badges in `README.md`.

Changed
- Changed basic script into basic distributable Python package.
- Changed `os.path` usage to `Path`.
- Replaced `format()` with f-strings.
- Separated License from README