Examine source code of DCO GitHub UI

{
  "manifest_version": 2,
  "name": "DCO GitHub UI",
  "version": "1.1.0",
  "description": "DCO signoff for GitHub UI",
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "images/dco-gh-ui-16.png",
    "32": "images/dco-gh-ui-32.png",
    "48": "images/dco-gh-ui-48.png",
    "96": "images/dco-gh-ui-96.png",
    "128": "images/dco-gh-ui-128.png"
  },
  "content_scripts": [
    {
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ],
      "matches": [
        "https://github.com/*"
      ]
    }
  ]
}