text: var gulp        = require('gulp');
  var browserSync = require('browser-sync');
  var sass        = require('gulp-sass');
  var reload      = browserSync.reload;
  var through     = require("through2");
  
  /**
   * A slow task
   */
  gulp.task('slow1', function () {
      return gulp.src('./app/*.html')
          .pipe(slowStream());
  });
  
  /**
   * Another Slow task
   */
  gulp.task('slow2', function () {
      return gulp.src('./app/*.html')
          .pipe(slowStream());
  });
  
  /**
   * Separate task for the reaction to a file change
   */
  gulp.task('html-watch', ['slow1', 'slow2'], reload);
  
  /**
   * Sass task for live injecting into all browsers
   */
  gulp.task('sass', function () {
      return gulp.src('./app/scss/*.scss')
          .pipe(sass())
          .pipe(gulp.dest('./app/css'))
          .pipe(reload({stream: true}));
  });
  
  /**
   * Serve and watch the html files for changes
   */
  gulp.task('default', function () {
  
      browserSync({server: './app'});
  
      gulp.watch('./app/scss/*.scss', ['sass']);
      gulp.watch('./app/*.html',      ['html-watch']);
  });
  
  /**
   * Simulate a slow task
   */
  function slowStream () {
      return through.obj(function (file, enc, cb) {
          this.push(file);
          setTimeout(cb, 2000);
      });
  }