Octoview

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Octoview",
  "version": "1.0.0",
  "description": "The missing preview feature for GitHub",
  "homepage_url": "https://github.com/pd4d10/octoview",
  "icons": {
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "dist/raven.js",
      "dist/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "js": [
        "dist/raven.js",
        "dist/contentscript.js"
      ],
      "run-at": "document_idle"
    }
  ]
}