Examine source code of WykopAwsomer3

{
  "description": "IM AWSOME",
  "manifest_version": 2,
  "name": "WykopAwsomer3",
  "version": "1.1resigned1",
  "homepage_url": "http://wykop.pl",
  "applications": {
    "gecko": {
      "id": "wykopawsomer3@mozilla.org",
      "strict_min_version": "45.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wykop.pl/*"
      ],
      "run_at": "document_idle",
      "js": [
        "jquery-3.1.0.min.js",
        "awsomer.js"
      ]
    }
  ]
}