Update 'README.md'

README.md

@@ -1,3 +1,5 @@
 # gcdt
 
-Musings on Generalized Commutative Data Types
+Musings on Generalized Commutative Data Types
+
+ <p xmlns:cc="http://creativecommons.org/ns#" ><a rel="cc:attributionURL" href="https://code.garrettmills.dev/garrettmills/gcdt">This work</a> by <a rel="cc:attributionURL dct:creator" property="cc:attributionName" href="https://garrettmills.dev/">Garrett Mills</a> is licensed under <a href="http://creativecommons.org/licenses/by-nc-sa/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-NC-SA 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/nc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/sa.svg?ref=chooser-v1"></a></p>