Examine source code of Task Reminder v2

{
  "manifest_version": 2,
  "name": "Task Reminder",
  "version": "1.0",
  "description": "Set quick reminders for your tasks.",
  "icons": {
    "48": "icons/reminder-icon-48.png"
  },
  "permissions": [
    "notifications",
    "alarms"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/reminder-icon-48.png",
    "default_popup": "reminder-popup.html",
    "default_title": "Task Reminder"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{66f9e74c-cbdf-4540-b5fa-471aca000ad6}"
    }
  }
}