Remove instance logic for BinaryStorage and JsonStorage, part 2

1. part of #389
2. file rename
3. fixup

Plugins/Wox.Plugin.Folder/Settings.cs

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Wox.Infrastructure.Storage;
+
+namespace Wox.Plugin.Folder
+{
+    public class Settings
+    {
+        [JsonProperty]
+        public List<FolderLink> FolderLinks { get; set; }
+    }
+}