Simply

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Simply",
  "short_name": "Simply",
  "description": "This extension will analyze a tutorial and determine if it's beginner friendly.",
  "version": "1.0",
  "browser_action": {
    "default_icon": "icons/icon128.png",
    "default_popup": "src/page_action/page_action.html"
  },
  "default_locale": "en",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/jquery/jquery.js",
        "src/inject/inject.js"
      ],
      "css": [
        "src/inject/inject.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/bg/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "notifications"
  ]
}