Update README.md, add philippczernitzki.me

I have created a new website/blog using GatsbyJS and Netlify.
If you like it, I will be happy.

Author: Philipp Czernitzki

README.md

@@ -187,6 +187,7 @@ Websites built with Gatsby:
 * [The Rick and Morty API](http://rickandmortyapi.com/)
 * [Adnan Fajlur - Portfolio](https://adnanfajlur.xyz/)
 * [Hapticmedia](https://hapticmedia.fr/en/)
+* [Philipp Czernitzki - Blog/Website](http://philippczernitzki.me)
 
 ## Docs