Begin to allow more config options for reports
Make CSV report columns somewhat configurable, need CLI
Split up CLI specs
Can configure CSV reports from CLI
Ignore unrecognized values for CSV columns
Nicer format for markdown reports
Remove detailed text and status reports

They can be generated with
    license_finder report --columns name version licenses summary description
    license_finder report --columns approved name version licenses
respectively.
README reflects possible reports
More idiomatic Ruby