Improve module description

Problem/Motivation

Enable module
Enable permission for anonymous user
Enable feature and configure it in settings form ( /admin/config/system/improved_reading )
Add toggle button bloc

Could you, please also give an explanation for default values.

e.g.

Minimum word length: 5
Minimum text length: 500

Bold ration: what is the unit? %?
jQuery selectors: are they required? Which ones are recommended for a default drupal install?

Thank you for that module!

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes