Examine source code of Quick Notes

{
  "manifest_version": 2,
  "name": "Quick Notes",
  "version": "1.0",
  "description": "A note-taking extension where users can quickly jot down ideas and save them for later.",
  "icons": {
    "48": "icons/border-48.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/border-48.png"
    },
    "default_title": "Quick Notes",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{724a1afa-4521-4916-805b-3f1d3ec72b87}"
    }
  }
}