Review of the 8.x-1.x branch (commit c66eb43):
- Your README.md does not follow best practices (headings need to be uppercase). See https://www.drupal.org/node/2181737 .
- The REQUIREMENTS section is missing.
- The INSTALLATION section is missing.
- The CONFIGURATION section is missing.
- No automated test cases were found, did you consider writing PHPUnit tests? This is not a requirement but encouraged for professional software development.