Examine source code of Bookmark Refresh

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "0.0.4resigned1",
  "default_locale": "en",
  "description": "__MSG_appDescription__",
  "icons": {
    "48": "images/icon-48.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": {
      "16": "images/icon-16.png",
      "32": "images/icon-32.png",
      "64": "images/icon-64.png"
    },
    "default_title": "__MSG_appName__",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "bookmarks",
    "storage",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{680d21d8-be96-460e-9eac-a7d5016e8e48}"
    }
  }
}