Cml component support in Atom

Adds syntax highlighting and snippets to Cml component files in Atom.

Originally converted from cmljs/cml-syntax-highlight.

Working with SCSS/Sass

Since cml-loader redirects language=x to loader style!css!x and sass-loader is using SCSS as default, you need to remap them in webpack.config.js:

cml: {
  loaders: {
    sass: 'style!css!sass?indentedSyntax',
    scss: 'style!css!sass'
  }
}

This is so that this package can support both old Sass and new SCSS. Refer to hedefalk/atom-cml#5 and the official solution for more info.