{
  "name": "webtendo",
  "version": "0.0.1",
  "description": "Webtendo JS game platform",
  "dependencies": {
    "dep-linker": "^1.0.24",
    "node-static": "0.7.7",
    "socket.io": "^1.5.1",
    "webrtc-adapter": "^2.0.6"
  },
  "scripts": {
    "start": "node index.js"
  }
}

{
  "name": "webtendo",
  "version": "0.0.1",
  "description": "Webtendo JS game platform",
  "dependencies": {
    "dep-linker": "^1.0.24",
    "node-static": "0.7.7",
    "socket.io": "^1.5.1",
    "webrtc-adapter": "^2.0.6"
  },
  "scripts": {
    "start": "node index.js"
  },
  "engines": {
    "node": "6.6.0"
  }
}

Set node version for heroku
Set node version for heroku
