Examine source code of UofT Course Info

{
  "options_ui": {
    "page": "src/settings/settings.html",
    "open_in_tab": true
  },
  "content_security_policy": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline' https://maxcdn.bootstrapcdn.com",
  "background": {
    "scripts": [
      "src/contentscripts/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "images/Acorn_16.png",
      "48": "images/Acorn_48.png",
      "128": "images/Acorn_128.png"
    },
    "default_title": "UofT Course Info",
    "default_popup": "src/popup/popup.html"
  },
  "content_scripts": [
    {
      "css": [
        "dependencies/tippy/light.css"
      ],
      "js": [
        "dependencies/jquery/jquery.min.js",
        "dependencies/tippy/tippy.all.min.js",
        "src/contentscripts/util.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "js": [
        "src/contentscripts/textbookLinker.js"
      ],
      "matches": [
        "http://courseinfo.murad-akh.ca/textbooks/*"
      ]
    }
  ],
  "description": "Adds informative tooltips to University of Toronto courses mentioned across the web",
  "icons": {
    "16": "images/Acorn_16.png",
    "48": "images/Acorn_48.png",
    "128": "images/Acorn_128.png"
  },
  "manifest_version": 2,
  "name": "UofT Course Info",
  "permissions": [
    "activeTab",
    "*://*/*",
    "tabs",
    "storage",
    "notifications"
  ],
  "version": "4.6.1",
  "web_accessible_resources": [
    "dependencies/tipped/tipped.css",
    "data/directory.json",
    "src/settings/settings.html",
    "src/about/index.html"
  ]
}