Updated AUTHORS.rst

Author: aydrian

AUTHORS.rst

@@ -2,6 +2,7 @@ Core contributors
 -----------------
 
 - Bob Evans <bob.evans@messagesystems.com> `@bizob2828 <https://github.com/bizob2828>`_
+- Aydrian Howard <aydrian.howard@messagesystems.com> `@aydrian <https://github.com/aydrian>`_
 - Rich Leland <rich.leland@messagesystems.com> `@richleland <https://github.com/richleland>`_