Update contributor list

Author: mdpiper

CREDITS.md

@@ -12,6 +12,7 @@ Contributors
 
 * [Andrea Balza](https://github.com/andieie)
 * [Isamar Cortés](https://github.com/isamarcortes)
+* [Mariana Gomez](https://github.com/mgomezn)
 * [Agustina Pesce](https://github.com/aguspesce)
 * [Mark Piper](https://github.com/mdpiper)
 * [Santiago Soler](https://github.com/santisoler)