Examine source code of To-Do List extension

{
  "manifest_version": 2,
  "name": "To-Do List",
  "description": "Manage your tasks with ease as you work!",
  "version": "1.1",
  "icons": {
    "128": "images/icons/Daily-To-Do-List-icon.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_title": "todo",
    "default_icon": "images/icons/Daily-To-Do-List-icon.png"
  }
}