Add detection options

Added ability to tag items with detected language
Added ability to define top level tag
Added ability to define custom metadata field name
Renamed folder to match script name

1.1.0: Merge pull request #2 from Nuix/add-tags

Updated custom metadata to display more user friendly language description. When detecting language the script will add tags to the item to denote the language detected.

Version 1.0.0

Initial release