docs: attribution

Author: TheLastCicada

README.md

@@ -133,3 +133,8 @@ The "subject" of the commit follows. It should be a short indication of the chan
 ### Commit linting
 
 Each time you commit the message will be checked against these standards in a pre-commit hook. Additionally all the commits in a PR branch will be linted before it can be merged to master.
+
+## Attribution
+
+* [Document Object Model](https://www.w3.org/TR/DOM-Requirements/) by [W3C](https://www.w3.org/) licensed under [CC BY 4.0](http://creativecommons.org/licenses/by/4.0/)
+* [caniuselite](https://github.com/browserslist/caniuse-lite) by [Browserlist](https://browsersl.ist/) licensed under [CC BY 4.0](http://creativecommons.org/licenses/by/4.0/)