Alphabetize CONTRIBUTORS by surname
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index f90b1fc..ae909e5 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -9,8 +9,8 @@
 # Names should be added to this file as:
 #     Name <email address>
 
-Dmitry Lomov <dslomov@google.com>
-Jon Brandvein <brandjon@google.com>
-Laurent Le Brun <laurentlb@google.com>
 Tony Allevato <allevato@google.com>
+Jon Brandvein <brandjon@google.com>
 Nathan Herring <nherring@google.com>
+Laurent Le Brun <laurentlb@google.com>
+Dmitry Lomov <dslomov@google.com>