Count Down Timer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Count Down Timer",
  "description": "Simple count down timer - by govindpatel(https://github.com/govindpatel)",
  "version": "1.0",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "res/icon1.png",
    "default_popup": "popup.html",
    "default_title": "Count Down Timer"
  },
  "icons": {
    "16": "res/icon1.png",
    "48": "res/icon32.png",
    "128": "res/icon128.png"
  },
  "permissions": [
    "notifications"
  ]
}