Added utils class
Run file command and parse type
Added proc calling
Merge branch 'master' into add-horn-to-horse
Added ZipExtractor support
Matching more than 1st word from 'file' output
Merge branch 'master' into add-horn-to-horse
Added format matches for rar/7z
Merge branch 'master' into add-horn-to-horse
Added gzip_extractor support
Fix for detecting GPG type
Merge pull request #3 from kyrus/add-horn-to-horse

1st pull of extractor top-level: zip/gzip