Add website (alshedivat#802)

Author: ioannismavromatis

README.md

@@ -73,6 +73,7 @@ Feel free to add your own page(s) by sending a PR.
 <a href="https://carolinacarreira.github.io" target="_blank">★</a>
 <a href="https://manandey.github.io" target="_blank">★</a>
 <a href="https://johanneshoerner.github.io" target="_blank">★</a>
+<a href="https://ioannismavromatis.com" target="_blank">★</a>
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