Examine source code of Awesome Flash YearPlan

{
  "manifest_version": 2,
  "name": "Awesome Flash YearPlan",
  "version": "1.6.5",
  "description": "Garder un oeil sur vos dates importantes.",
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@624a0135-c87f-4e0d-a60b-1abe7411ba85",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "author": "Coleman Software",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png"
    }
  }
}