Added readme

Author: cmaglie

README.md

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+# WiFi101 Firmware Updater Tool for Arduino IDE [![Build Status](https://travis-ci.org/arduino-libraries/WiFi101-FirmwareUpdater-Plugin.svg?branch=master)](https://travis-ci.org/arduino-libraries/WiFi101-FirmwareUpdater-Plugin)
+
+This plugin is a GUI to update Firmware or SSL Certificates on shield or boards based
+on the Atmel WINC1500 WiFi chipset (for example the Arduino/Genuino WiFi 101 Shield or the
+Arduino/Genuino MKR1000 board).
+
+## Installation
+
+- Download the tool [from this page](https://github.com/arduino-libraries/WiFi101-FirmwareUpdater-Plugin/releases/latest).
+- Create a `tools` folder in your sketchbook, if it doesn't exist yet.
+- Unpack the zip archive into `tools` folder (it will look like `.../Arduino/tools/WiFi101/tool/WiFi101.jar`)
+- Restart the Arduino IDE. 
+
+## Usage
+
+- TDB
+
+## Screenshots
+
+![Screenshot](screenshot-1.png)
+
+![Screenshot](screenshot-2.png)
+
+## Issues and suggestions
+
+Please open an issue [on github](https://github.com/arduino-libraries/WiFi101-FirmwareUpdater-Plugin/issues/new).
+
+## Credits and license
+
+```
+ Copyright 2016 Arduino LLC (http://www.arduino.cc/)
+
+ Arduino is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+ As a special exception, you may use this file as part of a free software
+ library without restriction.  Specifically, if other files instantiate
+ templates or use macros or inline functions from this file, or you compile
+ this file and link it with other files to produce an executable, this
+ file does not by itself cause the resulting executable to be covered by
+ the GNU General Public License.  This exception does not however
+ invalidate any other reasons why the executable file might be covered by
+ the GNU General Public License.
+```
+