Added copyright

EonaCat.Connections.Client/Program.cs

@@ -1,9 +1,10 @@
-using EonaCat.Connections;
-using EonaCat.Connections.Models;
-using System.Text;
+using EonaCat.Connections.Models;
 
 namespace EonaCat.Connections.Client.Example
 {
+    // This file is part of the EonaCat project(s) which is released under the Apache License.
+    // See the LICENSE file or go to https://EonaCat.com/license for full license details.
+
     public class Program
     {
         private static NetworkClient _client;
@@ -16,6 +17,7 @@ namespace EonaCat.Connections.Client.Example
             {
                 Console.Write("Enter message to send (or 'exit' to quit): ");
                 var message = Console.ReadLine();
+
                 if (!string.IsNullOrEmpty(message) && message.Equals("exit", StringComparison.OrdinalIgnoreCase))
                 {
                     await _client.DisconnectAsync().ConfigureAwait(false);