During conversion, run method for writing files specific to a provider
For now limit supproted inputs to virtualbox
Add kvm provider
Use source_root
Testing box.xml generation
Get values for box.xml from ovf
test script
Pass provider box it is for
Use box instance variable
require specific files method
use instance variables for boxes in converter
More greppable name for converter
Mark private methods
Rename some methods
Bump version and update Changelog and Readme