Examine source code of Voice Command Navigator

{
  "manifest_version": 2,
  "name": "Voice Command Navigator",
  "version": "1.0",
  "description": "Browse the web using voice commands.",
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a8f80ef3-8d34-4349-9077-f8e3f71cb760}"
    }
  }
}