Pixelsort-cli

- updated python project structure
- renamed to pixelsort-cli due to naming issues on pypi
- Minor change in image.py

**Full Changelog**: https://github.com/Blotz/pixelsort-cli/compare/v0.1.1...v0.1.2

- improved printing
- improved documentation

**Full Changelog**: https://github.com/Blotz/pixelsorter/compare/v0.1...v0.1.1

First release of this command line tool.
- basic features and functionality
- licenses

**Full Changelog**: https://github.com/Blotz/pixelsorter/commits/v0.1