Examine source code of Search Jisho

{
  "manifest_version": 2,
  "name": "Search Jisho",
  "version": "1.1resigned1",
  "description": "Adds a context menu item to search Jisho.org for the selected text.",
  "icons": {
    "48": "icons/jisho-search-48.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "tabs",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{77021898-c4f9-4a7d-94b7-6d1562ea0b1c}"
    }
  }
}