Made links human readable

Courses/natureofcode/README.md

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 I'm using this repo to keep track of additional code examples. Anything not here can be found at the [Nature-of-Code Repo](https://github.com/shiffman/The-Nature-of-Code-Examples) and [Nature-of-Code p5.js Repo](https://github.com/shiffman/The-Nature-of-Code-Examples-p5.js)
 
 # All videos
-* https://www.youtube.com/user/shiffman/playlists?sort=dd&view=50&shelf_id=6
+* [The Nature of Code](https://www.youtube.com/user/shiffman/playlists?view=50&shelf_id=6&sort=dd "The Nature of Code - Youtube")
 
 # Questions? Need Support?
-* Join: http://patreon.com/codingtrain
+* [Become a Patreon](http://patreon.com/codingtrain "Coding Train - Patreon")