Examine source code of PSN Profiles guide column

{
  "name": "PSN Profiles guide column",
  "description": "Adds a guide column to the games list with difficulty and hour from official guide to make deciding your next hunt easier.",
  "version": "1.3.2",
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://psnprofiles.com/*"
      ],
      "js": [
        "jquery.min.js",
        "difficultyColumn.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "games.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9b07e44c-7a9e-4d9d-9834-87baa1f5aeb4}"
    }
  }
}