Use console_scripts to install script

This is needed for windows support.
Avoid import error in jediepcserver
Warn when using distutils
Require python-environment >= 0.0.2

... to include these fixes:
https://github.com/tkf/emacs-python-environment/pull/8
https://github.com/tkf/emacs-python-environment/pull/9
Improve "make env" by targeting env/bin/jediepcserver
Merge pull request #152 from tkf/windows-jediepcserver

Fix jediepcserver installation for Windows (fixes #148)