A+C: Add Anthony Eufemio (Individual CLA)

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6524045
diff --git a/AUTHORS b/AUTHORS
index c94b40c..8783b03 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -29,6 +29,7 @@
 Andy Davis <andy@bigandian.com>
 Anh Hai Trinh <anh.hai.trinh@gmail.com>
 Anschel Schaffer-Cohen <anschelsc@gmail.com>
+Anthony Eufemio <anthony.eufemio@gmail.com>
 Anthony Martin <ality@pbrane.org>
 Anthony Starks <ajstarks@gmail.com>
 Aron Nopanen <aron.nopanen@gmail.com>