Please add an [appcast](https://github.com/caskroom/homebrew-cask/blob/master/doc/cask_language_reference/stanzas/appcast.md) and update the `version` and `sha256` accordingly.    The `version` is 3.0.2, and when set the `url` can be changed to  ```  url "https://sweetpproductions.com/products/wifispoof#{version.major}/WiFiSpoof#{version.major}.dmg"  ```