Module to manage pyenv

This module manages python with pyenv (which is a fork of rbenv). It
allows you to install different python versions and switch them at will.
[samjsharpe] Install multiple pythons

I'd like 2.7.6 and 3.3.3 please
Merge pull request #47 from alphagov/manage-pythons-with-pyenv

Manage pythons with pyenv