Review of the 8.x-1.x branch (commit d8ef19c):
- Your README.txt does not follow best practices (headings need to be uppercase). See https://www.drupal.org/node/2181737 .
- The CONFIGURATION section is missing.
- Remove LICENSE.txt, it will be added by drupal.org packaging automatically.
- No automated test cases were found, did you consider writing PHPUnit tests? This is not a requirement but encouraged for professional software development.