add possibility to install chocolatey also

Module should install chocolatey also:
- added init class
- added the ps1 file as a template
- depends on joshcooper/powershell

Can use either "windows" or 7zip as methods to extract the software
Like the idea, only thing I'm not sure about is it looks like this doesn't respect setting env var 'ChocolateyInstall' and alternate install locations.