Merge pull request #66 from kalabiyau/master

Delete files from destination to avoid confusions
Fixes #67
Merge branch 'master' of github.com:pradels/vagrant-libvirt
version 0.0.10
Update README.md

Update the minimum Vagrant version required and current release version
Merge pull request #69 from brettporter/patch-1

Update README.md
Allow to use nested virtualization again