builder.json

{
  "osx" : {
    "title": "Google Photos",
    "background": "assets/osx/icon.png",
    "icon": "assets/osx/icon.icns",
    "icon-size": 80,
    "contents": [
      { "x": 438, "y": 344, "type": "link", "path": "/Applications" },
      { "x": 192, "y": 344, "type": "file" }
    ]
  },
  "win" : {
    "title" : "Google Photos",
    "icon" : "assets/win/icon.ico"
  }
}