Add mediafreakch as contributor (#124)

Author: afontcu

README.md

@@ -172,6 +172,7 @@ official plugin:
 [![NoelDeMartin](https://avatars2.githubusercontent.com/u/1517677?v=3&s=120)](https://github.com/NoelDeMartin)
 [![chiptus](https://avatars2.githubusercontent.com/u/1381655?v=3&s=120)](https://github.com/chiptus)
 [![bennettdams](https://avatars2.githubusercontent.com/u/29319414?v=3&s=120)](https://github.com/bennettdams)
+[![mediafreakch](https://avatars2.githubusercontent.com/u/777093?v=3&s=120)](https://github.com/mediafreakch)
 
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