To install propre, it's as easy as download a Gem. You just need RubyGems.
sudo gem install propre
That's all. You can now use propre !
Commands:
propre --version, -v # Show version information about this program and quit.
propre help [COMMAND] # Describe available commands or one specific command
propre lint [FILENAME...] # Sanitize the specified file. Use --dry for dry run
propre metadata [FILENAME] # Show metadata about the specified movie or episode