Examine source code of Water Reminder App

{
  "manifest_version": 2,
  "name": "Water Reminder",
  "version": "3.0",
  "description": "Reminds you to drink water every hour.",
  "permissions": [
    "notifications",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "200": "icons/boba.gif"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aff68a1b-ba64-4941-a1c0-59512d6bbb7a}"
    }
  }
}