README: Update year in copyright

Change-Id: I56240f537fb3205672cdb2a74f0591ae7bb73dbc

README: Update year in copyright
479cc99a · Rodrigo Ramírez Norambuena · 9a67730d · 479cc99a
Commit 479cc99a authored 9 years ago by Rodrigo Ramírez Norambuena
--- a/README
+++ b/README
@@ -4,7 +4,7 @@
 ===                   by Mark Spencer <markster@digium.com>
 ===                  and the Asterisk.org developer community
 ===
-===                    Copyright (C) 2001-2009 Digium, Inc.
+===                    Copyright (C) 2001-2016 Digium, Inc.
 ===                       and other copyright holders.
 ===============================================================================