Update file headers.

libraries/MySensors/MySigningAtsha204.cpp

@@ -1,9 +1,30 @@
-/*
- ATSHA204 signing backend. The Atmel ATSHA204 offers true random number generation and
- HMAC-SHA256 authentication with a readout-protected key.
- 
- Created by Patrick "Anticimex" Fallberg <patrick@fallberg.net>
-*/
+/**
+ * The MySensors Arduino library handles the wireless radio link and protocol
+ * between your home built sensors/actuators and HA controller of choice.
+ * The sensors forms a self healing radio network with optional repeaters. Each
+ * repeater and gateway builds a routing tables in EEPROM which keeps track of the
+ * network topology allowing messages to be routed to nodes.
+ *
+ * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
+ * Copyright (C) 2013-2015 Sensnology AB
+ * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
+ *
+ * Documentation: http://www.mysensors.org
+ * Support Forum: http://forum.mysensors.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ *******************************
+ *
+ * DESCRIPTION
+ * Signing support created by Patrick "Anticimex" Fallberg <patrick@fallberg.net>
+ * ATSHA204 signing backend. The Atmel ATSHA204 offers true random number generation and
+ * HMAC-SHA256 authentication with a readout-protected key.
+ *
+ */
+
 #include "MySigning.h"
 #include "MySigningAtsha204.h"