Writing the first pingo.parts
a.k.a Switch
Merge branch 'master' of https://github.com/Vido/pingo into Switch

Conflicts:
	pingo/parts/__init__.py
Merge branch 'master' of https://github.com/garoa/pingo into Switch
Switch for pingo.parts
This is an old code revised. The thread design was based upon the parts.Led,
which is a elegent code.
Flake8
Switch working example
Flake8
Merge pull request #62 from Vido/Switch

Thanks, @vido!