Examine source code of GitHub Diff Explorer

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "default_locale": "en",
  "version": "1.3.0",
  "description": "The GitHub Diff Explorer is a minimalist browser add-on which generates a seamless file explorer in GitHub pull requests",
  "author": "Alex Dodge",
  "short_name": "GitHub Diff Explorer",
  "icons": {
    "48": "images/icon48.png",
    "96": "images/icon96.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "images/icon48.png",
      "96": "images/icon96.png"
    },
    "default_title": "GitHub Diff Explorer",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*/*"
      ],
      "css": [
        "lib/gde_styles.css"
      ],
      "js": [
        "lib/gde_script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "https://github.com/"
  ]
}