Add license links

README.md

@@ -69,7 +69,16 @@ All questions, comments and insights please address to me via e-mail: bartlomiej
 
 ## License
 
-This script is published under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) license.
+[![CC BY 4.0][cc-by-shield]][cc-by]
+
+This work is licensed under a
+[Creative Commons Attribution 4.0 International License][cc-by].
+
+[![CC BY 4.0][cc-by-image]][cc-by]
+
+[cc-by]: https://creativecommons.org/licenses/by/4.0/
+[cc-by-image]: https://i.creativecommons.org/l/by/4.0/88x31.png
+[cc-by-shield]: https://img.shields.io/badge/License-CC%20BY%204.0-lightgrey.svg
 
 ## Additional info