Examine source code of Blackjack Advisor

{
  "name": "Blackjack Advisor",
  "description": "Make the best move possible in Black Jack, every time.",
  "version": "1.0.0",
  "manifest_version": 2,
  "homepage_url": "https://casinosites.ltd.uk",
  "short_name": "BJ Advisor",
  "icons": {
    "16": "/images/icon-16x16.png",
    "32": "/images/icon-32x32.png",
    "48": "/images/icon-48x48.png",
    "128": "/images/icon-128x128.png"
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "author": "Kontempry Ltd",
  "developer": {
    "name": "Kontempry Ltd"
  },
  "minimum_chrome_version": "49",
  "minimum_opera_version": "36",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon-16x16.png",
      "32": "images/icon-32x32.png",
      "48": "images/icon-48x48.png",
      "128": "images/icon-128x128.png"
    },
    "default_title": "Blackjack Advisor",
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c173f3e9-05f7-4c63-bdd5-58865c95c231}"
    }
  }
}