Examine source code of Habit Tracker

{
  "manifest_version": 2,
  "name": "Habit Tracker",
  "version": "1.0",
  "description": "Track your daily habits and see your progress.",
  "icons": {
    "48": "icons/habit-tracker-icon-48.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/habit-tracker-icon-48.png",
    "default_popup": "habit-tracker-popup.html",
    "default_title": "Habit Tracker"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{80bbe438-20ff-470c-857d-b38bb4e1ed73}"
    }
  }
}