Mention about output format in the README

[midnight-wonderer]

Hello there,
I tried Sudachi with -a; the problem is that the output has a weird number at the end for some inputs.

Like this:

開き	動詞,一般,*,*,五段-カ行,連用形-一般	開く	開く	ヒラキ	0	[22589]

It would be better if you mentioned something to help out new users in the README. Especially for users who are just Japanese learners.

I understand it is complicated with option flags and plugins. However, there should be a link to the relevant code so that people can understand it better.

[mh-northlander]

Thank you for pointing out that the readme is not updated.

Since the SimpleMorphemeFormatter class defines the default behavior of the Sudachi CLI tool, I would rather want to update line 74 (and l.409) instead.

Now with the -a option, Sudachi additionally prints: the dictionary form, the reading form, the dictionary id, list of synonym group ids and OOV flag if it is so.