Gist Markdown Preview

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Gist Markdown Preview",
  "version": "2.0.3",
  "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/"
  ]
}