Examine source code of Prettify USACO

{
  "name": "Prettify USACO",
  "description": "Get prettier, more readable USACO Solutions!",
  "version": "1.12",
  "manifest_version": 2,
  "icons": {
    "128": "src/images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "http://usaco.org/*",
        "http://*.usaco.org/*",
        "http://*.usaco.org/*"
      ],
      "js": [
        "src/contentScript.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "src/popup/popup.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "prism/*"
  ]
}