Implement .plexignore, refactor some Utils
Use mtime instead of ctime, helps initial date be right, until analysis fills in from EXIF.
Merge pull request #23 from mmccurdy07/plexignore

Implement .plexignore, refactor some Utils
Add .tp video file extension.
Merge pull request #24 from mmccurdy07/tp

Add .tp video file extension.
Fix typo in parameters.
Use older (9.5.4-friendly) method for opening files.