Feature request: Auto detect sass-lint bin

[romulof]

Try to find sass-lint binary automatically following this rules:

1) <PROJECT_ROOT>/node_modules/.bin/sass-lint
2) <PATH>/sass-lint

Also, keep the option to allow the user to manually switch to a different one.

[xumepadismal]

I think it would be even better to find/specify path to the sassLint package instead of binary. This is the way like the built-in ESLint plugin works right now.

Then it would be possible to share (commit) .idea/sasslintPlugin.xml with the other Windows/Unix developers of your team.