Example for using a TextMate Language file to NSAttributedString with Splash?

Hey there! 

I'm trying to use your collection of wonderful packages to create a highlighted `NSAttributedString` with Splash from any TextMate language file. If I understand this package correctly it seems like this should already be possible, however I can't figure out how 😄 

Do you have an example snippet for how I would do this?

All the best 👋 