How to specify which beautifiers to use with the CLI

[lassik]

I understood the .unibeautifyrc format is being changed so that beautifiers must always be given explicitly, meaning that there are no default beautifiers. This should probably be reflected in the CLI as well. Currently the only way to specify beautifiers for the CLI is to give --config-json or --config-file.

• The CLI should be changed so it doesn't have default beautifiers either (do the CLI default beautifiers come from the CLI implementation or from somewhere in core?)

• Maybe the CLI should read .unibeautifyrc by default?

• Would it be useful to have a separate shorthand option to specify the beautifiers?

• The CLI examples in README/documentation need to updated to reflect these changes.