update copyright year

Christoph Singer · Christoph Singer · commit ec11ef3e00a2 · 2018-03-08T21:38:01.000+01:00
diff --git a/LICENSE b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2015 Christoph Singer, Web-Agentur 72
+Copyright (c) 2015-2018 Christoph Singer, Web-Agentur 72
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-Copyright (c) 2015 Christoph Singer, Web-Agentur 72`
	`1`	`+Copyright (c) 2015-2018 Christoph Singer, Web-Agentur 72`
`2`	`2`
`3`	`3`	`Permission is hereby granted, free of charge, to any person obtaining a copy`
`4`	`4`	`of this software and associated documentation files (the "Software"), to deal`