Gulp File - *working document*

gulpfile.js

var gulp = require('gulp'),
    // sass = require('gulp-ruby-sass'),
    compass = require('gulp-compass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifycss = require('gulp-minify-css'),
    jshint = require('gulp-jshint'),
    uglify = require('gulp-uglify'),
    imagemin = require('gulp-imagemin'),
    pngcrush = require('imagemin-pngcrush'),
    rename = require('gulp-rename'),
    clean = require('gulp-clean'),
    concat = require('gulp-concat'),
    notify = require('gulp-notify'),
    cache = require('gulp-cache'),
    livereload = require('gulp-livereload');

gulp.task('styles', function() {
  return gulp.src('assets/scss/style.scss')
    // .pipe(sass({ style: 'expanded' }))
    .pipe(compass({ config_file: 'config.rb', css: 'assets/css', sass: 'assets/scss' }))
    .pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4'))
    .pipe(gulp.dest('assets/css'))
    .pipe(rename({suffix: '.min'}))
    .pipe(minifycss())
    .pipe(gulp.dest('assets/css'))
    .pipe(notify({ message: 'Styles task complete' }));
});

gulp.task('scripts', function() {
  return gulp.src(['assets/js/plugins.js', 'assets/js/vendor/*.js'])
    // .pipe(jshint('.jshintrc'))
    // .pipe(jshint.reporter('default'))
    .pipe(concat('plugins.js'))
    .pipe(rename({suffix: '.min'}))
    .pipe(gulp.dest('assets/js'))
    .pipe(uglify())
    .pipe(gulp.dest('assets/js'))
    .pipe(notify({ message: 'Scripts task complete' }));
});

gulp.task('images', function() {
  return gulp.src('assets/media/img/**/*')
    .pipe(cache(imagemin({ optimizationLevel: 3, progressive: true, interlaced: true })))
    .pipe(gulp.dest('assets/media/img'))
    .pipe(notify({ message: 'Images task complete' }));
});

// gulp.task('clean', function() {
//   return gulp.src(['assets/css', 'assets/js', 'assets/media/img'], {read: false})
//     .pipe(clean());
// });

gulp.task('default', function() {
    gulp.start('styles', 'scripts', 'images');
});

gulp.task('watch', function() {

  // Watch .scss files
  gulp.watch('assets/scss/**/*.scss', ['styles']);

  // Watch .js files
  gulp.watch('assets/js/**/*.js', ['scripts']);

  // Watch image files
  gulp.watch('assets/media/img/**/*', ['images']);

});