app.json

  {
      "name": "LTQ",
      "description": "My first web application",
      "keywords": [
    "productivity",
    "HTML5",
    "scalpel"
  ],
      "website": "https://LTQ.com/",
      "repository": "https://github.com/jane-doe/small-sharp-tool",
      "logo": "https://small-sharp-tool.com/logo.svg",
      "success_url": "/welcome",
      "scripts": {
          "postdeploy": "bundle exec rake bootstrap"
      },
      "env": {
          "SECRET_TOKEN": {
              "description": "A secret key for verifying the integrity of signed cookies.",
              "generator": "secret"
          },
          "WEB_CONCURRENCY": {
              "description": "The number of processes to run.",
              "value": "5"
          }
      },
      "formation": {
          "web": {
              "quantity": 2,
              "size": "Performance-M"
          }
      },
      "image": "heroku/ruby",
      "addons": [
    "openredis",
    "mongolab:shared-single-small"
  ],
      "buildpacks": [
          {
              "url": "https://github.com/stomita/heroku-buildpack-phantomjs"
    }
  ]
  }