Adding myself to AUTHORS/CONTRIBUTORS for Go.

R=rsc
https://golang.org/cl/155041
diff --git a/AUTHORS b/AUTHORS
index 9da8c91..cedc064 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -10,6 +10,7 @@
 
 Abhinav Gupta <abhinav.g90@gmail.com>
 David Titarenco <david.titarenco@gmail.com>
+Devon H. O'Dell <devon.odell@gmail.com>
 Google Inc.
 Kevin Ballard <kevin@sb.org>
 Môshe van der Sterre <moshevds@gmail.com>