{
  "name": "keitaro-theme",
  "version": "1.0.0",
  "description": "The official WordPress theme of Keitaro Inc.",
  "main": "",
  "dependencies": {
    "bootstrap": "^3.3.7",
    "jquery": "^3.1.1"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": ""
  },
  "keywords": [
    "keitaro"
  ],
  "author": "Goce Mitevski",
  "license": "ISC",
  "homepage": "",
  "devDependencies": {
    "gulp": "^3.9.1",
    "gulp-clean-css": "^3.9.2",
    "gulp-cli": "^1.3.0",
    "gulp-concat": "^2.6.1",
    "gulp-less": "^3.3.0",
    "gulp-rename": "^1.2.2",
    "gulp-sourcemaps": "^2.6.0",
    "gulp-uglify": "^3.0.0",
    "jquery": "^2.2.4",
    "less": "^2.7.2"
  }
}

{
  "name": "keitaro-theme",
  "version": "1.0.0",
  "description": "The official WordPress theme of Keitaro Inc.",
  "main": "",
  "dependencies": {
    "bootstrap": "^3.3.7",
    "jquery": "^3.1.1"
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": ""
  },
  "keywords": [
    "keitaro"
  ],
  "author": "Goce Mitevski",
  "license": "ISC",
  "homepage": "",
  "devDependencies": {
    "gulp": "^3.9.1",
    "gulp-autoprefixer": "^4.1.0",
    "gulp-clean-css": "^3.9.2",
    "gulp-cli": "^1.3.0",
    "gulp-concat": "^2.6.1",
    "gulp-less": "^3.3.0",
    "gulp-rename": "^1.2.2",
    "gulp-sourcemaps": "^2.6.0",
    "gulp-uglify": "^3.0.0",
    "jquery": "^2.2.4",
    "less": "^2.7.2"
  }
}

Add gulp-autoprefixer module in devDependencies
Add gulp-autoprefixer module in devDependencies
