Update Program.cs

Replaced the dual license with MIT to make it consistent with all other sample source files.

SampleApplications/Samples/NetCoreConsoleClient/Program.cs

@@ -1,14 +1,31 @@
-/* Copyright (c) 1996-2019 The OPC Foundation. All rights reserved.
-   The source code in this file is covered under a dual-license scenario:
-     - RCL: for OPC Foundation members in good-standing
-     - GPL V2: everybody else
-   RCL license terms accompanied with this source code. See http://opcfoundation.org/License/RCL/1.00/
-   GNU General Public License as published by the Free Software Foundation;
-   version 2 of the License are accompanied with this source code. See http://opcfoundation.org/License/GPLv2
-   This source code is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-*/
+/* ========================================================================
+ * Copyright (c) 2005-2019 The OPC Foundation, Inc. All rights reserved.
+ *
+ * OPC Foundation MIT License 1.00
+ * 
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ * 
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The complete license agreement can be found here:
+ * http://opcfoundation.org/License/MIT/1.00/
+ * ======================================================================*/
 
 using Mono.Options;
 using Opc.Ua;