Add "beet info --album" to the plugin documentation too
@@ -31,6 +31,8 @@ Additional command-line options include:
* ``--library`` or ``-l``: Show data from the library database instead of the
files' tags.
+* ``--album`` or ``-a``: Show data from albums instead of tracks (implies
+ ``--library``).
* ``--summarize`` or ``-s``: Merge all the information from multiple files
into a single list of values. If the tags differ across the files, print
``[various]``.
