Focus timer

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Focus timer",
  "description": "Timer to focus",
  "version": "1.1",
  "browser_action": {
    "default_icon": "clock.png",
    "default_popup": "timer.html",
    "default_title": "woei"
  },
  "permissions": [
    "tabs",
    "notifications",
    "storage"
  ],
  "background": {
    "scripts": [
      "jquery.min.js",
      "timer.js",
      "background.js"
    ],
    "persistant": false
  }
}