Additions / modifications I've made

Hi Jacob,

Sorry for the delay, here is a quick overview of some updates I made.  I hope they are helpful.

1. Tried normalizing all of the hash["whatever"] to hash['whatever'].
2. Added JSON output support
3. Streamlined YAML, XML, JSON, and STDOUT output.
4. Added file rescan support.
5. (Hopefully) added support for passing an array of results to VTResult