update year

README.md

@@ -1,6 +1,6 @@
 # Inputmask
 
-Copyright (c) 2010 - 2018 Robin Herbots Licensed under the MIT license ([http://opensource.org/licenses/mit-license.php](http://opensource.org/licenses/mit-license.php))
+Copyright (c) 2010 - 2019 Robin Herbots Licensed under the MIT license ([http://opensource.org/licenses/mit-license.php](http://opensource.org/licenses/mit-license.php))
 
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