Examine source code of ghfix

{
  "name": "ghfix",
  "description": "Fix Github stuff",
  "version": "0.1.2",
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "js": [
        "loader.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "main.js"
  ],
  "browser_action": {
    "default_title": "ghfix",
    "default_icon": "logo.png",
    "default_popup": "popup.html"
  },
  "manifest_version": 2,
  "short_name": "ghfix"
}