brunch config snippet to enable slim compilation on save.

brunch-slim-compilation-config-snippet.coffee

  # add the afterBrunch npm package and setup afterBrunch like the following.
  plugins:
    afterBrunch: [
      ''' # compile slim files
        ruby <<EOF
        path = 'app'
        Dir.glob("app/**/*.slim")do |file|
          target = file.gsub( /\.slim$/, '').gsub(%r(^app\/assets), '_public')
          system "slimrb #{file} #{target}"
        end
        EOF
      '''
    ]