Release 0.0.4

Thanks to victorg for reminding me to bump the version in the Modulefile.
Remove unnecessary nesting in vagrant directory.

This isn't needed anymore because of:
https://github.com/pradels/vagrant-libvirt/commit/0ac7498f4d73d4100462ac34b5cd89c308622fc5

Let me know if I broke anything or if this still works perfectly!