Add new settings to allow more control over the errors reported by the plugin

[DuaelFr]

Not every team or every tool respects all the rules of BEM, so that would be really great to be able to expand this plugin's settings to our specific needs.
For example, the plugin could provide the following settings with their logical default values:

• allowUppercase: false
• maxModifier: 1
• allowUnderscoreSeparator: false

[ernscht]

Thank you for your request.
This stylelint plugin was created to respect our best practices when linting.
Of course, we are always open to improvements and would include backwards compatible, well-tested merge requests.

(What I don't understand: what errors are you talking about in the subject?)

[DuaelFr]

I was talking about linting errors reported by the plugin. I'll try to rephrase that another way.