Examine source code of PMT Ad Bypass

{
  "manifest_version": 2,
  "name": "pmt-bypass",
  "version": "1.0",
  "description": "Bypass PMT ads.",
  "permissions": [
    "tabs",
    "webNavigation"
  ],
  "icons": {
    "48": "icons/pmt-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.physicsandmathstutor.com/*"
      ],
      "js": [
        "index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b6ab2234-b262-4ed9-98db-5abe92dab4e8}"
    }
  }
}