Add possibility to read the series from the audible library

README.md

@@ -57,6 +57,7 @@ bash interactiveAAXtoMP3 [-a|--advanced] [-h|--help]
 * **--file-naming-scheme <STRING>** or **-F**    Use a custom file naming scheme, with variables. See [below](#custom-naming-scheme) for more info.
 * **--chapter-naming-scheme <STRING>**  Use a custom chapter naming scheme, with variables. See [below](#custom-naming-scheme) for more info.
 * **--use-audible-cli-data** Use additional data got with mkb79/audible-cli. See [below](#audible-cli-integration) for more info. Needed for the files in the `aaxc` format.
+* **--audible-cli-library-file** or **-L** Path of the library-file, generated by mkb79/audible-cli (`audible library export -o ./library.tsv`). Only available if `--use-audible-cli-data` is set. This file is required to parse additional metadata such as `$series` or `$series_sequence`.
 * **--ffmpeg-path**  Set the ffmpeg/ffprobe binaries folder. Both of them must be executable and in the same folder.
 
 ## Options for interactiveAAXtoMP3
@@ -151,6 +152,10 @@ So you can use `--dir-naming-scheme '$(date +%Y)/$artist'`, but using `--file-na
 * If you want shorter chapter names, use `--chapter-naming-scheme '$(printf %0${#chaptercount}d $chapternum) $chapter'`: only chapter number and chapter name
 * If you want to append the narrator name to the title, use `--dir-naming-scheme '$genre/$artist/$title-$narrator' --file-naming-scheme '$title-$narrator'`
 * If you don't want to have the books separated by author, use `--dir-naming-scheme '$genre/$title'`
+* To be able to use `$series` or `$series_sequence` in the schemes the following is required:
+  * `--use-audible-cli-data` is set
+  * you have pre-generated the library-file via `audible library export -o ./library.tsv`
+  * you have set the path to the generated library-file via `--audible-cli-library-file ./library.tsv`
 
 ### Installing Dependencies.
 In general, take a look at [command-not-found.com](https://command-not-found.com/)