Examine source code of RShortNote

{
  "manifest_version": 2,
  "name": "RShortNote",
  "version": "1.1resigned1",
  "description": "Allows the user to make short notes by clicking a button and entering text into the resulting popup. The notes are saved in storage.",
  "icons": {
    "48": "icons/48.png"
  },
  "applications": {
    "gecko": {
      "strict_min_version": "48.0",
      "id": "{9a3c2850-353d-4f91-b95e-09cfb6826d14}"
    }
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/32.png"
    },
    "default_title": "RShortNote",
    "default_popup": "popup/shortnote.html"
  }
}