Add README.md for ev-aducrf101mkxz platform

platform/ev-aducrf101mkxz/README.md

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+Building Contiki for the EV-ADuCRF101MKxZ Board
+===============================================
+
+On Debian/Ubuntu Linux:
+-----------------------
+
+For older versions of Ubuntu (prior to 14.04), add the external
+package repository that provides recent versions of GCC for ARM:
+
+    sudo add-apt-repository -y ppa:terry.guo/gcc-arm-embedded
+    sudo apt-get update
+
+For all systems, install the required development packages:
+
+    sudo apt-get install git make gcc-arm-none-eabi python-serial
+
+Obtain the Contiki source code:
+
+	git clone https://github.com/contiki-os/contiki.git
+
+Build Contiki's `example-abc`:
+
+	make -C contiki/examples/rime \
+        TARGET=ev-aducrf101mkxz \
+        example-abc.ev-aducrf101mkxz.hex
+
+The default radio frequency can optionally be specified on the
+command-line as follows.  A clean rebuild may be needed when changing
+it:
+
+	make -C contiki/examples/rime \
+        TARGET=ev-aducrf101mkxz \
+        RF_CHANNEL=915000000 \
+        clean \
+        example-abc.ev-aducrf101mkxz.hex
+
+The code can be flashed to the eval board and tested using
+[adi-cm3sd](https://github.com/jimparis/adi-cm3sd.git).  Obtain
+`adi-cm3sd`:
+
+    git clone https://github.com/jimparis/adi-cm3sd.git
+
+Connect the evaluation board using its J-Link board, or any other
+serial adapter.  Flash `example-adc` and open a terminal by running:
+
+    adi-cm3sd/cm3sd.py -a contiki/examples/rime/example-abc.ev-aducrf101mkxz.hex \
+        /dev/serial/by-id/usb-SEGGER_J-Link_000541011111-if00
+
+replacing `/dev/serial/by-id/usb-SEGGER_J-Link_000541011111-if00` with
+the path to the correct serial device.  Flash the same code on a
+second evaluation board to see them communicate.
+
+### IPv6 Example ###
+
+#### Border Router ####
+
+First, build and run the IPv6 `border-router` example:
+
+	make -C contiki/examples/ipv6/rpl-border-router \
+        TARGET=ev-aducrf101mkxz \
+        SERIAL_ID='"00001234"' \
+        border-router.ev-aducrf101mkxz.hex
+
+    adi-cm3sd/cm3sd.py -a contiki/examples/ipv6/rpl-border-router/border-router.ev-aducrf101mkxz.hex \
+        /dev/serial/by-id/usb-SEGGER_J-Link_000541011111-if00
+
+After flashing, close the terminal with `CTRL-C`, then build and run
+the SLIP tunnel on the host machine:
+
+	make -C contiki/tools tunslip6
+
+    sudo contiki/tools/tunslip6 \
+        -s /dev/serial/by-id/usb-SEGGER_J-Link_000541011111-if00 \
+        -B 115200 -v3 aaaa::1/64
+
+Press the RESET button on the eval board, then open the border router
+home page at: http://[aaaa::3230:3030:3132:3334]/
+
+#### Web Server ####
+
+Then, build and flash the IPv6 `webserver6` example on another eval
+board.  The different `SERIAL_ID` ensures that the webserver uses a
+link-local IP address that is different from that of the border
+router:
+
+	make -C contiki/examples/webserver-ipv6 \
+        TARGET=ev-aducrf101mkxz \
+        SERIAL_ID='"00005678"' \
+        webserver6.ev-aducrf101mkxz.hex
+
+    adi-cm3sd/cm3sd.py -a contiki/examples/webserver-ipv6/webserver6.ev-aducrf101mkxz.hex \
+        /dev/serial/by-id/usb-SEGGER_J-Link_000541022222-if00
+
+Open the web server's home page at: http://[aaaa::3230:3030:3536:3738]/