Examine source code of Web Notes

{
  "manifest_version": 2,
  "name": "Web Notes",
  "homepage_url": "https://github.com/AjaxPop/webNotes",
  "description": "Create and save your notes to the web browser.",
  "version": "1.0.1",
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_action": {
    "default_icon": "icons/icon96.png",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "activeTab",
    "storage"
  ]
}