Calculadora

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Calculadora",
  "description": "Uma simples Calculadora.",
  "manifest_version": 2,
  "minimum_chrome_version": "23",
  "version": "1.1.3",
  "offline_enabled": true,
  "app": {
    "background": {
      "scripts": [
        "main.js"
      ]
    }
  },
  "icons": {
    "16": "assets/icon-128x128.png",
    "128": "assets/icon-128x128.png"
  }
}