Examine source code of PutinHotDog

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "PutinHotDog",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "hotdog.jpg"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b53823d5-bdd4-4516-b97b-d590d8833034}"
    }
  }
}