Examine source code of Quick Notes simple

{
  "manifest_version" : 2 ,
  "name" : "Quick Notes",
  "version" : "1.0",
  "description" : "A simple extension to create quick notes.",
  "icons" : {
    "48" : "icon.png"
  },
  "browser_action" : {
    "default_popup" : "popup.html",
    "default_icon" : "icon.png"
  },
  "permissions" : [
    "storage" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{15732793-0a7a-4016-839f-6cd77642d66c}"
    }
  }
}