Fix import subprocess32 in python 2.7.3
Fix unittest import.
Ignore local envs.
Fix unicode prompt text.
Merge branch 'fix-unicode-prompt' of git://github.com/s-m-i-t-a/cookiecutter into s-m-i-t-a-fix-unicode-prompt
Use 'from __future__ import unicode_literals' instead of u prefix for Python 3 style code.