Examine source code of CookKeeper

{
  "name": "CookKeeper",
  "version": "1.4resigned1",
  "manifest_version": 2,
  "description": "Сохранение рецептов в один клик",
  "icons": {
    "16": "images/icon_16.png",
    "32": "images/icon_32.png",
    "48": "images/icon_48.png"
  },
  "permissions": [
    "contextMenus",
    "tabs",
    "https://cookkeeper.ru/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "jquery.js",
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Добавить рецепт в CookKeeper",
    "default_icon": "images/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c18e44ef-5bdf-4781-abe0-fbff4033ddc9}"
    }
  }
}