cool

gulpfile.js

var gulp = require('gulp'),
    connect = require('gulp-connect'),
    sass = require('gulp-sass');
 
gulp.task('sass', function () {
  gulp.src('./sass/**/*.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp.dest('./css'));
});
 
gulp.task('copy-css', ['sass'], function(){
  gulp.src('./css/**/*')
    .pipe(gulp.dest('./tmp'))
})

gulp.task('sass:watch', function () {
  gulp.watch('./sass/**/*.scss', ['sass', 'copy-css']);
});

gulp.task('connect', function() {
  connect.server();
});

gulp.task('default', ['connect', 'sass:watch', 'sass']);