Examine source code of Ask Mona Extension

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "askmonaex@noname.akira"
    }
  },
  "name": "Ask Mona Extension",
  "version": "0.5resigned1",
  "description": "Ask Mona の機能を拡張します",
  "icons": {
    "48": "icon.png"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "data/background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://askmona.org/*"
      ],
      "js": [
        "data/askmona.js"
      ]
    }
  ]
}