Examine source code of WaniKanify 2.0

{
  "background": {
    "scripts": [
      "js/jquery.js",
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_title": "WaniKanify 2.0",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wanikanify@example.com",
      "strict_min_version": "100.0"
    }
  },
  "description": "A tool for reinforcing your WaniKani vocabulary.",
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "manifest_version": 2,
  "name": "WaniKanify 2.0",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "http://*/*",
    "https://*/*"
  ],
  "version": "2.0.5"
}