Examine source code of MA Auto Reload2

{
  "name": "MA Auto Reload2",
  "description": "A auto reload on offline add-on",
  "manifest_version": 2,
  "version": "1.0.3resigned1",
  "icons": {
    "32": "icon/icon32.png",
    "64": "icon/icon64.png"
  },
  "author": "MicroAd Inc.",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "tabs",
    "browserSettings",
    "webNavigation",
    "<all_urls>",
    "notifications"
  ],
  "options_ui": {
    "page": "data/options.html",
    "browser_style": true
  },
  "applications": {
    "gecko": {
      "id": "{F5509917-D388-471B-B778-A225E252EC27}",
      "strict_min_version": "57.0a1"
    }
  }
}