Add obertura777 to contributor list (#6505)

Author: Obertura777

resources/avatars/obertura777.png

@@ -90,6 +90,7 @@ droidicus | https://github.com/droidicus | :/avatars/droidicus.png
 vincent0955 | https://github.com/vincent0955 | :/avatars/vincent0955.png
 isgkm | https://github.com/isgkm |
 otaviobia | https://github.com/otaviobia | :/avatars/otaviobia.png
+obertura777 | https://github.com/obertura777 | :/avatars/obertura777.png
 
 # If you are a contributor add yourself above this line