Examine source code of Breeding Schedule Tracker

{
  "manifest_version": 2,
  "name": "Breeding Schedule Tracker",
  "version": "1.0",
  "description": "Breeding Schedule Tracker. This utility helps users to track the breeding schedule of livestock.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/breed-logo.png"
    }
  },
  "icons": {
    "128": "images/breed-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e2a1e50d-0ab9-44ab-ac93-742c31a25e8d}"
    }
  }
}