Create AUTHORS

(I'll ask Paul to add his name here too)
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..a0d9cc3
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,10 @@
+# This the official list of rules_kotlin authors for copyright purposes.
+# This file is distinct from the CONTRIBUTORS files.
+# See the latter for an explanation.
+
+# Names should be added to this file as:
+# Name or Organization <email address>
+# The email address is not required for organizations.
+
+Google Inc.
+Hassan Syed <h.a.syed@gmail.com>