title: scss-lint - how config the default.yml?
body: <p>I'm using <a href="https://github.com/causes/scss-lint" rel="nofollow">scss-lint</a> with <a href="http://gulpjs.com/" rel="nofollow">gulp.js</a> in my project and I want to add some configurations to my local <code>scss-lint</code> fork.
  In the documentation of <code>scss-lint</code> it's says that I can add a configuration by creating a file named <code>.scss-lint.yml</code> in the styles directory, so I do:</p>
  
  <pre><code>scss_files: 'src/styles/**/*.scss'
  
  NestingDepth:
      enabled: true
      max_depth: 4
  
  SelectorDepth:
    enabled: true
    max_depth: 4
  </code></pre>
  
  <p>But when I run <code>gulp</code> the configurations just not apply. How can I make my configuration work?</p>