Examine source code of Quick Notes Popup

{
  "manifest_version": 2,
  "name": "Quick Notes Popup",
  "version": "1.0",
  "description": "Take quick notes in a popup and save them locally.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png",
    "default_title": "Quick Notes"
  },
  "permissions": [],
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3591dea-5d57-4636-9d33-ac80ddaa3290}"
    }
  }
}