Added UpdateComponentGroupCommand

app/Handlers/Commands/ComponentGroup/UpdateComponentGroupCommandHandler.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Handlers\Commands\ComponentGroup;
+
+use CachetHQ\Cachet\Commands\ComponentGroup\UpdateComponentGroupCommand;
+use CachetHQ\Cachet\Events\ComponentGroup\ComponentGroupWasUpdatedEvent;
+use CachetHQ\Cachet\Models\ComponentGroup;
+
+class UpdateComponentGroupCommandHandler
+{
+    /**
+     * Handle the update component group command.
+     *
+     * @param \CachetHQ\Cachet\Commands\ComponentGroup\UpdateComponentGroupCommand $command
+     *
+     * @return \CachetHQ\Cachet\Models\ComponentGroup
+     */
+    public function handle(UpdateComponentGroupCommand $command)
+    {
+        $group = $command->group;
+        $group->update([
+            'name'  => $command->name,
+            'order' => $command->order,
+        ]);
+
+        event(new ComponentGroupWasUpdatedEvent($group));
+
+        return $group;
+    }
+}