Send notification on unban

[antonkomarev]

@antonkomarev Is there any way:

When the user clicks a button, an unban link will be sent to that user's email address.

When the user clicks on the unban link or button it triggers a controller which trigger's this
$user->unban which unbans the user.

Thank you, Unable to pull a request.

Originally posted by @maxillarious in #40 (comment)

[antonkomarev]

@maxillarious

Listen to \Cog\Laravel\Ban\Events\ModelWasBanned event and dispatch email notification.