--files option does not work due to colorization of keys

[Christian1984]

There is an issue with the colorization of keys in bin/license-checker.js:78 ff.

Since keys are colorized here they can no longer be used as filenames when using the --files option. fs throws multiple errors here.

I'd like to fix that by separating responsibilities in terms of separating data (bare text-keys) from their colored representation (on output).

[Christian1984]

Fixed in https://github.com/davglass/license-checker/pull/210