Yt-videos-list

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.2.4...v0.2.5) changes to previous version

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.2.3...v0.2.4) changes to previous version
- adds support for Safari browser
- fixes misleading prompt in command line that told users to type "continue" instead of "proceed"
- calls the lower() method (previously forgot parentheses)

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.2.2...v0.2.3) changes to previous version
- adds commands for installing Selenium dependencies on different OSs
- adds option for user to specify browsers (Firefox, Chrome, and Opera currently supported)

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.2.1...v0.2.2) changes to previous version

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.1.6...v0.2.1) changes to previous version

- [compare](https://github.com/slow-but-steady/yt-videos-list/compare/v0.1.5...v0.1.6) changes to previous version
- updated docstrings and README to reflect changes in API
- established logic for running program as script (in script.py)