Support for Powershell and Bash

[Gabbalo]

As requested in the topic, please add support for script-languages as bash or Powershell.
That whould be awesome.
I hope, that request is not too hard to be implemented, as there are lots of commandlets and stuff to be included.

Thank a lot for this awesome theme.

[biletskyy]

Hi. I added support for bash, but it really minimal.
I looked at Powershell, and it seems like rich language with classes and types. I'll try to add support, but not right now. So I left this issue open till then.