Examine source code of Wow Mount Guides+

{
  "manifest_version": 2,
  "name": "Wow Mount Guides+",
  "version": "1.0.0a",
  "permissions": [
    "storage",
    "*://*.battle.net/*",
    "*://*.api.blizzard.com/*"
  ],
  "description": "Adds additional profile support for https://wowmountguides.com/",
  "icons": {
    "32": "icons/border-32.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wowmountguides.com/mount-search*"
      ],
      "js": [
        "wmg_plus.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wowmountguidesplus@hand.technology"
    }
  }
}