This update adds support for multiple input files.  The logic will
read the reference data only once, and then process files in
serial.  The file switch supports both "file" and "files".  Also
the output approach needed to be updated.  The output switch
has been changed to "reportDir" (but any subword like "report"
will work).  If multiple files are input, multiple reports are
created under the specified report directory.

Committer: John Colosi <jcolosi@verisign.com>
 modified:   README.md
 modified:   idn-properties