Examine source code of GitCut

{
  "manifest_version": 2,
  "name": "GitCut",
  "version": "0.1.2",
  "description": "Copy links from github issues and pull requests easily",
  "content_scripts": [
    {
      "css": [
        "styles.css"
      ],
      "js": [
        "content.js"
      ],
      "matches": [
        "https://github.com/*"
      ]
    }
  ]
}