Revert "Updated release year"

This reverts commit d0284fc2.

README.markdown

@@ -278,4 +278,4 @@ Know of one? Built one? Let us know!
 I have every reason to believe this tool will **not** corrupt your data or harm your computer. But if I were you, I would not use it in a production environment.
 
 
-Released by Maypop Inc, © 2012–2017, under the [MIT License] (http://www.opensource.org/licenses/MIT).
+Released by Maypop Inc, © 2012–2016, under the [MIT License] (http://www.opensource.org/licenses/MIT).

variety.js

@@ -7,7 +7,7 @@ finding rare keys.
 
 Please see https://github.com/variety/variety for details.
 
-Released by Maypop Inc, © 2012-2017, under the MIT License. */
+Released by Maypop Inc, © 2012-2016, under the MIT License. */
 
 (function () {
   'use strict'; // wraps everything for which we can use strict mode -JC