A+C: Add Andrew Harding  (Individual CLA)

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6544044
diff --git a/AUTHORS b/AUTHORS
index 8783b03..656923e 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -21,6 +21,7 @@
 Amrut Joshi <amrut.joshi@gmail.com>
 Andrei Vieru <euvieru@gmail.com>
 Andrew Balholm <andybalholm@gmail.com>
+Andrew Harding <andrew@spacemonkey.com>
 Andrew Lutomirski <andy@luto.us>
 Andrew Pritchard <awpritchard@gmail.com>
 Andrew Skiba <skibaa@gmail.com>