Update copyright year range in licence

DavidOliver · DavidOliver · commit 2d2aed129232 · 2016-03-04T03:28:31.000+01:00
diff --git a/licence b/licence
@@ -1,5 +1,5 @@
 HTTP Caching extension for Symphony CMS
-Copyright (c) 2012 David Oliver
+Copyright (c) 2012 - 2016 David Oliver
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
