Update README.md

Author: sergiokopplin

README.md

@@ -77,6 +77,14 @@ If you want travis tests, you can take a look at:
 
 ---
 
+## Showcase
+
+- [fohlen.github.io](http://fohlen.github.io/) by @[Lennard Berger](https://github.com/Fohlen)
+
+([pull-request](https://github.com/sergiokopplin/indigo/pulls) if you want your site in this awesome list)
+
+---
+
 ## Contributions
 
 - [siddhantjain](https://github.com/siddhantjain)