Add AUTHORS file

AUTHORS.rst

+=======
+Credits
+=======
+
+Development Lead
+----------------
+
+* ACC Murphy <[email protected]>
+
+Contributors
+------------
+
+Mark Tearle <[email protected]>
+Bernard Blackham <[email protected]>
+John Hodge <[email protected]>
+Cameron Patrick <[email protected]>
+Grahame Bowland <[email protected]>
+Matt Johnston <[email protected]>
+David Adam <[email protected]>
+David Basden <[email protected]>
+Nick Bannon <[email protected]>
+