💪 add ayan-b into contributor list

Author: chfw

CONTRIBUTORS.rst

@@ -3,6 +3,7 @@ Contributors
 
 In alphabetical order:
 
+* `Ayan Banerjee <https://github.com/ayan-b>`_
 * `Charlie Liu <https://github.com/CLiu13>`_
 * `John Vandenberg <https://github.com/jayvdb>`_
 * `Joshua Chung <https://github.com/seeeturtle>`_