Update Copyright year.

Author: proofit404

pyenv-mode.el

@@ -1,6 +1,6 @@
 ;;; pyenv-mode.el --- Integrate pyenv with python-mode
 
-;; Copyright (C) 2014-2015 by Artem Malyshev
+;; Copyright (C) 2014-2016 by Artem Malyshev
 
 ;; Author: Artem Malyshev <[email protected]>
 ;; URL: https://github.com/proofit404/pyenv-mode