Examine source code of FPL Genius

{
  "manifest_version": 2,
  "name": "FPL Genius",
  "description": "Advanced statistical analysis and Artificial Intelligence to help you maximize your FPL points this season.",
  "version": "2.0.3",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "64": "icon-64.png",
    "128": "icon-128.png"
  },
  "background": {
    "scripts": []
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fantasy.premierleague.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "*://www.erlangstatus.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "FPL Genius Settings"
  }
}