{
  "name": "javascript-nz",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "async": "*",
    "consolidate": "*",
    "dotenv": "*",
    "jshint": "^2.9.5",
    "keystone": "^4.0.0",
    "keystone-email": "^1.1.0",
    "nunjucks": "*",
    "pug": "^2.0.3",
    "stripe": "*",
    "underscore": "*"
  },
  "devDependencies": {
    "gulp": "*",
    "gulp-jshint": "*",
    "jshint-stylish": "*",
    "gulp-watch": "*"
  },
  "engines": {
    "node": "*",
    "npm": "*"
  },
  "scripts": {
    "start": "node keystone.js",
    "lint": "gulp lint"
  },
  "main": "keystone.js"
}

{
  "name": "javascript-nz",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "async": "*",
    "consolidate": "*",
    "dotenv": "*",
    "jshint": "^2.9.5",
    "keystone": "^4.0.0",
    "keystone-email": "^1.1.0",
    "nunjucks": "*",
    "pug": "^2.0.3",
    "stripe": "*",
    "underscore": "*"
  },
  "devDependencies": {
    "gulp": "*",
    "gulp-jshint": "*",
    "jshint-stylish": "*",
    "gulp-watch": "*"
  },
  "engines": {
    "node": "8.1.3",
    "npm": "*"
  },
  "scripts": {
    "start": "node keystone.js",
    "lint": "gulp lint"
  },
  "main": "keystone.js"
}

Set node version for Heroku
Set node version for Heroku
