old_contents: var gulp = require('gulp');
  
  var concat = require('gulp-concat');
  var watch = require('gulp-watch');
  var order = require('gulp-order');
  
  gulp.task('compress', function() {
    gulp.src('scripts/*.js')
  	.pipe(order([
  		"spaceobject.js",
  		"asteroid.js",
  		"explosion.js",
  		"smoke.js",
  		"power.js",
  		"powerup.js",
  		"missile.js",
  		"spaceship.js",
  		"game.js",
  		"asteroids.js"
  	 ]))
  	.pipe(concat("asteroids.js"))
      .pipe(gulp.dest('.'))
  });
  
  gulp.task('default', function() {
  	gulp.watch('scripts/*.js', ['compress']);
  });
  
new_contents: var gulp = require('gulp');
  
  var concat = require('gulp-concat');
  var watch = require('gulp-watch');
  var order = require('gulp-order');
  
  gulp.task('compress', function() {
    gulp.src('scripts/*.js')
  	.pipe(order([
  		"spaceobject.js",
  		"aienship.js",
  		"asteroid.js",
  		"explosion.js",
  		"smoke.js",
  		"power.js",
  		"powerup.js",
  		"missile.js",
  		"spaceship.js",
  		"game.js",
  		"asteroids.js"
  	 ]))
  	.pipe(concat("asteroids.js"))
      .pipe(gulp.dest('.'))
  });
  
  gulp.task('default', function() {
  	gulp.watch('scripts/*.js', ['compress']);
  });
  
subject: add alienship to gulpfile