Update copyright to 2019

src/sendalert.cpp

@@ -1,6 +1,21 @@
 // Copyright (c) 2016 The Zcash developers
 // Original code from: https://gist.github.com/laanwj/0e689cfa37b52bcbbb44
 
+/******************************************************************************
+ * Copyright © 2014-2019 The SuperNET Developers.                             *
+ *                                                                            *
+ * See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at                  *
+ * the top-level directory of this distribution for the individual copyright  *
+ * holder information and the developer policies on copyright and licensing.  *
+ *                                                                            *
+ * Unless otherwise agreed in a custom licensing agreement, no part of the    *
+ * SuperNET software, including this file may be copied, modified, propagated *
+ * or distributed except according to the terms contained in the LICENSE file *
+ *                                                                            *
+ * Removal or modification of this copyright notice is prohibited.            *
+ *                                                                            *
+ ******************************************************************************/
+
 /*
 
 To set up a new alert system