Update AssemblyInfo.cs

WavFile/Properties/AssemblyInfo.cs

@@ -1,4 +1,6 @@
-using System.Reflection;
+// Copyright (c) Wiesław Šoltés. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;