SyncIt

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "SyncIt",
  "description": "Sync your files instantly",
  "version": "1.2",
  "manifest_version": 2,
  "minimum_chrome_version": "27",
  "icons": {
    "16": "16.png",
    "128": "128.png"
  },
  "permissions": [
    "fileSystem",
    "fileSystem.write",
    "syncFileSystem"
  ],
  "app": {
    "background": {
      "scripts": [
        "main.js"
      ]
    }
  }
}