- Add GLS to list of tracking providers
- Update installation instructions to include creating `config.ini` file with KeyDelivery API details
- Mention that without creating `config.ini` file, only tracking shipments from Austrian Post and GLS is possible.
- Added LICENSE file with MIT license details.
- Added README.md file with information on how to use the script.
- Added config.dist.ini file with KeyDelivery API configuration details.