Git Time Machine

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Git Time Machine",
  "version": "1.2",
  "description": "Time machine for files on github",
  "author": "Patrick Moody",
  "content_scripts": [
    {
      "matches": [
        "*://github.com/*"
      ],
      "css": [
        "time_machine_button.css"
      ],
      "js": [
        "time_machine_button.js"
      ]
    }
  ],
  "permissions": [
    "tabs"
  ],
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "web_accessible_resources": [
    "galaxy_button.png"
  ]
}