Allow for Plex season-episode rules

See
https://plexapp.zendesk.com/hc/en-us/articles/200220687-Naming-Series-Based-TV-Shows
Allow for parsing a file directory for show name

see
https://plexapp.zendesk.com/hc/en-us/articles/200220687-Naming-Series-Based-TV-Shows
Fix Plex rules

 - Fix the regexes that match to Plex rules
 - invert the order of `$file, $directory` to match previous usage
 - unit test.
Merge pull request #1 from jimgraham/JGPlexParsingRules

Add Plex parsing rules for TV Shows.