website/package.json

{
  "private": true,
  "dependencies": {
    "del": "^2.2.2",
    "gulp": "github:gulpjs/gulp#4.0",
    "gulp-autoprefixer": "^4.0.0",
    "gulp-hash": "^4.1.1",
    "gulp-sass": "^3.1.0",
    "gulp-uglify": "^3.0.0"
  }
}