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}"
    }
  }
}