Examine source code of Gist Markdown Preview

{
  "name": "Gist Markdown Preview",
  "version": "2.0.4resigned1",
  "description": "helps to preview the markdown while creating a markdown gist",
  "manifest_version": 2,
  "icons": {
    "16": "img/gist16.png",
    "48": "img/gist48.png",
    "128": "img/gist128.png"
  },
  "homepage_url": "https://github.com/revathskumar/gist-markdown-preview",
  "content_scripts": [
    {
      "matches": [
        "https://gist.github.com/",
        "https://gist.github.com/*/*/edit"
      ],
      "js": [
        "js/marked.js",
        "gist_markdown_preview.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "https://gist.github.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{102e379b-56f5-4af8-90b8-0a61bc5da164}"
    }
  }
}