Examine source code of Simple Notes

{
  "name": "Simple Notes",
  "manifest_version": 2,
  "description": "Simple notes in a panel, with a context menu item to copy text to a note.",
  "version": "1.1.5resigned1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "minimum_chrome_version": "29",
  "sidebar_action": {
    "default_icon": "icon_19.png",
    "default_title": "Notes",
    "default_panel": "old-opera-notes.html"
  },
  "permissions": [
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3ab7658f-3460-4720-ae4b-1341173547a2}"
    }
  }
}