gulpfile.js

/*!
 * gulp
 * $ npm install gulp-ruby-sass gulp-autoprefixer gulp-minify-css gulp-concat-css gulp-notify gulp-rename gulp-livereload del --save-dev
 */

// Load plugins
var gulp = require('gulp'),
    sass = require('gulp-ruby-sass'),
    autoprefixer = require('gulp-autoprefixer'),
    minifycss = require('gulp-minify-css'),
    concatcss = require('gulp-concat-css'),
    rename = require('gulp-rename'),
    notify = require('gulp-notify'),
    livereload = require('gulp-livereload'),
    del = require('del');
 
// Styles
gulp.task('styles', function() {
  return sass('src/sass/style.scss', { style: 'compact', })
    .pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4'))
    .pipe(concatcss("raearnold.css"))
    .pipe(rename({ suffix: '.min' }))
    .pipe(minifycss())
    .pipe(gulp.dest('dist/assets/css'))
    .pipe(notify({ message: 'Styles task complete' }));
});

// Clean
gulp.task('clean', function(cb) {
    del(['dist/assets/css'], cb)
});
 
// Default task
gulp.task('default', ['clean'], function() {
	gulp.start('styles');
});
 
// Watch
gulp.task('watch', function() {
 
  // Watch .scss files
  gulp.watch('src/scss/**/*.scss', ['styles']);
 
  // Create LiveReload server
  livereload.listen();
 
  // Watch any files in dist/, reload on change
  gulp.watch(['dist/**']).on('change', livereload.changed);
 
});