Examine source code of derstandardatextension

{
  "manifest_version": 2,
  "name": "derstandardatextension",
  "version": "1.0",
  "description": "Let's you browse derstandard.at with ad blocker.",
  "content_scripts": [
    {
      "matches": [
        "*://*.derstandard.at/*",
        "*://derstandard.at/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ]
}