Updated MovieExtras.bash (markdown)

MovieExtras.bash.md

@@ -9,4 +9,12 @@ Runs as a post processing script during Radarr download imports
 
 ### Purpose:
 
+Downloads Extras that are listed on [TMDB](https://www.themoviedb.org/) from YouTube using [yt-dlp](https://github.com/yt-dlp/yt-dl).
 
+### Options:
+
+* **extrasType** - Tells script to get all extras or only trailers for a given movie
+* **extrasLanguages** - A "," separated list of ISO 639-1 language codes, this specifies all languages to process for extras
+* **extrasOfficialOnly** - Tells script to either download all extras, or only extras that are marked as Official on TMDB's site.
+* **extrasSingle** - This setting tells the script to only download a single Trailer that Radarr provided for a given Movie, no other Extras will be downloaded
+* **extrasKodiCompatibility** - This setting only works when "extrasSingle" is enabled, this tells the script to name the single trailer as "movie-trailer.mkv" for compatibility with Kodi