Gist Previewer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Gist Previewer",
  "description": "Preview gist html/js/css code.",
  "version": "2.0.0",
  "content_scripts": [
    {
      "matches": [
        "https://gist.github.com/*"
      ],
      "js": [
        "js/gistpreviewer.js"
      ],
      "css": [
        "css/gistpreviewer.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "icons": {
    "16": "img/icon.png",
    "48": "img/icon.png",
    "128": "img/icon.png"
  },
  "manifest_version": 2
}