update copyright year range

Paul M. Jones · Paul M. Jones · commit e485b235d4c3 · 2018-12-24T08:20:59.000-06:00
diff --git a/LICENSE b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2011-2016, Aura for PHP
+Copyright (c) 2011-2018, Aura for PHP
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-Copyright (c) 2011-2016, Aura for PHP`
	`1`	`+Copyright (c) 2011-2018, Aura for PHP`
`2`	`2`	`All rights reserved.`
`3`	`3`
`4`	`4`	`Redistribution and use in source and binary forms, with or without`