Auto background colors, simple Windows test.

Context manager has same arguments as static method.

Example shows off color stripping too.
Fixing pytest skip, pip fix for Windows.

py3.4 still giving me problems on Windows. It apparently already removed
--no-clean even though the bug tracker stated they're un-deprecating it.

Removing the .git file during install for Windows CI. Hopefully that
fixes it on all versions of Python on Windows.