Examine source code of Insult Reminders

{
  "manifest_version": 2,
  "name": "Insult Reminders",
  "version": "1.0",
  "description": "A reminder extension that insults the user when snooze is pressed",
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "48": "icons/alarmclockicon.png"
    }
  },
  "icons": {
    "48": "icons/alarmclockicon.png"
  },
  "permissions": [
    "tabs",
    "activeTab"
  ],
  "content_scripts": [
    {
      "js": [
        "insultreminders.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d0bfd81-c14e-4078-bca1-ae8b6bcae6f5}"
    }
  }
}