Added my academic website to the community pages. (alshedivat#3184)

Thanks a lot for this great theme — I find it really clean and great for
hosting an academic website! I've added my customized academic page
(https://cbuelt.github.io/) to the community examples section, as
suggested. Thanks also for maintaining this project!

Author: cbuelt

README.md

@@ -162,6 +162,7 @@ Feel free to add your own page(s) by sending a PR.
 <a href="https://nishanthjkumar.com/" target="_blank">★</a>
 <a href="https://joszuijderwijk.nl/" target="_blank">★</a>
 <a href="https://d-jiao.github.io/" target="_blank">★</a>
+<a href="https://cbuelt.github.io/" target="_blank">★</a>
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