Update README.md

README.md

@@ -84,3 +84,16 @@ A github action to verify that certain files did or did not change during the wo
 |:-------------:|:-----------:|:-------------:|:--------------------------:|
 | files_changed | `string` | `true` OR `false` | Indicates that there are outstanding changes |
 | changed_files | `string` | `example.txt ...` | List of file(s)/directory names <br/> that changed <br/> during the workflow execution |
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+* Free software: [MIT license](LICENSE)
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+If you feel generous and want to show some extra appreciation:
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+[![Buy me a coffee][buymeacoffee-shield]][buymeacoffee]
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+[buymeacoffee]: https://www.buymeacoffee.com/jackton1
+[buymeacoffee-shield]: https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png
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+