Examine source code of Auto Tab Searcher

{
  "manifest_version": 2,
  "name": "Auto Tab Searcher",
  "version": "1.4resigned1",
  "description": "Notification and alarm sound when a string term appears on a page",
  "icons": {
    "48": "rsc/ico/autotabsearcher-48.png",
    "96": "rsc/ico/autotabsearcher-96.png"
  },
  "permissions": [
    "tabs",
    "<all_urls>",
    "notifications"
  ],
  "browser_action": {
    "default_icon": "rsc/ico/autotabsearcher-48.png",
    "default_title": "Auto Tab Searcher",
    "default_popup": "popup/config.html"
  },
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2e0e13e5-feba-4b8e-ab61-da33005fb5d7}"
    }
  }
}