Examine source code of successify Quote

{
  "manifest_version": 2,
  "name": "successify Quote",
  "version": "1.0",
  "description": "Displays a random sucess quote when you click the extension button.",
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon-48.png",
      "96": "icon-96.png"
    }
  },
  "icons": {
    "48": "icon-48.png",
    "96": "icon-96.png"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c23ed3a-f06f-42c3-85ed-c5d5588f0815}"
    }
  }
}