Update README.md with CC License Details

README.md

@@ -22,3 +22,5 @@ Password: `reviewcdcode22`
 
 ** _Please write to mail@cd-code.org to request more resources_ 
 
+
+<a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc/4.0/88x31.png" /></a><br />This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc/4.0/">Creative Commons Attribution-NonCommercial 4.0 International License</a>.