fix: Emacs as dependency (#39)

Author: jcs090218

pyenv-mode.el

@@ -5,7 +5,7 @@
 ;; Author: Artem Malyshev <[email protected]>
 ;; URL: https://github.com/proofit404/pyenv-mode
 ;; Version: 0.1.0
-;; Package-Requires: ((pythonic "0.1.0"))
+;; Package-Requires: ((emacs "25.1") (pythonic "0.1.0"))
 
 ;; This program is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by