gulp style task

gistfile1.txt

gulp.task("styles", function () {
  return gulp.src("app/styles/**/*.scss")
    .pipe($.sourcemaps.init())
    .pipe($.sass({
      outputStyle: "nested", // libsass doesn"t support expanded yet
      precision: 10,
      includePaths: ["."],
      onError: console.error.bind(console, "Sass error:")
    }))
    .pipe($.postcss([
      require("autoprefixer-core")({browsers: ["last 2 versions"]})
    ]))
    .pipe($.flatten())
    .pipe(gulp.dest(".tmp/styles"));
});