Create AUTHORS.md

AUTHORS.md

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+Authors
+=======
+
+Maintainer
+-------------
+
+-  2020-current | **Felix Turowsky**([*Github*](https://github.com/fiffty-50)) | felix.turo@gmail.com | original author.
+
+Contributor(s)
+--------------
+
+-  2020-current | **George Kotzampopoulos**([*Github*](https://github.com/KotzaBoss)) | gkkotzas@gmail.com | bug fixes, improvements, features.