Updated copyright notices to 2017.

CONTRIBUTORS

@@ -1,4 +1,4 @@
-# Copyright (C) 2015-2016: The University of Edinburgh
+# Copyright (C) 2015-2017: The University of Edinburgh
 #                 Authors: Craig Warren and Antonis Giannopoulos
 #
 # This is the official list of people who have contributed to the gprMax repository.
@@ -7,4 +7,4 @@
 
 Oystein Bjorndal
 John Hartley
-Rajath Kumar
+Rajath Kumar