Examine source code of QuickNote

{
  "manifest_version" : 2 ,
  "name" : "QuickNote",
  "version" : "1.1",
  "description" : "A simple note-taking extension",
  "permissions" : [
    "storage" 
  ],
  "browser_action" : {
    "default_popup" : "popup.html"
  },
  "icons" : {
    "128" : "icon128.png"
  },
  "content_security_policy" : "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d0f089c-25d0-4bb7-ac94-e6fcf228f30e}"
    }
  }
}