Examine source code of Weather Go

{
  "manifest_version": 2,
  "name": "Weather Go",
  "description": "Search for weather..",
  "version": "0.2resigned1",
  "icons": {
    "16": "assets/icon_16.png",
    "128": "assets/icon_128.png"
  },
  "browser_action": {
    "default_icon": "assets/logo.png",
    "default_popup": "web.html"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fbf1bfdc-faa3-4ecb-89e3-23cef0fd5a5e}"
    }
  }
}