Add ability to update an Egg by re-uploading a file.

app/Exceptions/Service/InvalidFileUploadException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Pterodactyl - Panel
+ * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
+ *
+ * This software is licensed under the terms of the MIT license.
+ * https://opensource.org/licenses/MIT
+ */
+
+namespace Pterodactyl\Exceptions\Service;
+
+use Pterodactyl\Exceptions\DisplayException;
+
+class InvalidFileUploadException extends DisplayException
+{
+}