Add README

Author: facchinm

README.adoc

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+= Helper library for over-the-air update on the Arduino MKR1000 board =
+
+This library implements an OTA update procedure for MKR1000 boards. mdns advertisement is included for a seamless integration with Arduino IDE
+
+For more information about this library please visit us at
+https://www.arduino.cc/en/Reference/WiFi101OTA
+
+== License ==
+
+Copyright (c) Arduino LLC. All right reserved.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+