app.json

{
  "name": "Spotify Token Service",
  "description": "A Spotify Token Swap/Refresh Service for easy deployment to Heroku.",
  "repository": "https://github.com/adamontherun/SpotifyTokenRefresh",
  "keywords": ["Sinatra", "spotify", "token"],
   "env": {
    "CLIENT_ID": {
      "description": "Your client id, found in your Spotify App Dashboard."
    },
    "CLIENT_SECRET": {
      "description": "Your client secret, found in your Spotify App Dashboard."
    },
     "ENCRYPTION_SECRET": {
      "description": "A secret key used to encrypt your token.",
      "generator": "secret"
    },
    "CLIENT_CALLBACK_URL": {
      "description": "The Redirect URI found in your Spotify App Dashboard."
    }
  }
}