add AUTHORS file (and disclaimer)

Author: mreiferson

AUTHORS

@@ -0,0 +1,15 @@
+# For a complete listing, see https://github.com/nsqio/go-nsq/graphs/contributors
+
+# Original Authors
+
+Matt Reiferson <mreiferson@gmail.com>
+Jehiah Czebotar <jehiah@gmail.com>
+
+# Maintainers
+
+Pierce Lopez <ploxiln@gmail.com>
+
+# Disclaimer
+
+Matt Reiferson's contributions to this project are being made solely in a personal capacity
+and does not convey any rights to any intellectual property of any third parties.