Examine source code of StackAnswer

{
  "manifest_version": 2,
  "name": "StackAnswer",
  "version": "1.4",
  "description": "StackAnswer is a browser extension that allows users on stackoverflow to go directly to the answer with either the checkmark or the most votes. Once on a page, the user will be presented with a box in the top right-hand corner, allowing him to navigate between the answers with the most votes or the one with the checkmark.",
  "homepage_url": "https://github.com/mengodkidjo/stackanswer",
  "icons": {
    "48": "icons/logo-48-bg.png",
    "96": "icons/logo-96-bg.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "stackanswer@ledocdev.com",
      "strict_min_version": "58.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://stackoverflow.com/questions/*"
      ],
      "js": [
        "js/content_script.js"
      ],
      "css": [
        "css/content_css.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "images/logo_long.png",
    "images/check.png",
    "images/minus.jpg",
    "icons/logo-48.png",
    "images/copy.png"
  ]
}