Added Furher Command Line Features

Changes
- does not output files when posting to SOLR.
- posts one-by-one, and commits at the end
- uses a Folder per WARC, then files inside. i.e. WARC/FILE.xml
- reports when each file has begun and numeric indicator of files in
list
- uses Apache Commons CLI to make the command line interface more
robust.
- only uses an output folder when not posting to a live Solr server
- adds a command-line option to include the 'text' field in the XML
output, by default, it is excluded.