Does not work/help if salts are missing.

In some installations or local environments (like https://localwp.com/) are no salts defined by default.

It is – as you said in your FAQ – easy for competent people to insert salts from https://api.wordpress.org/secret-key/1.1/salt/

But a lot of users are not able to work with wp-config.php directly. And your plugin is a lifesaver for them, when it comes to managing salts.

So it would be really great, if Salt Shaker could insert missing salts too!