Add instance of real quantity in XML scheme version 1.0.2

examples/Real_XSD_test.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<si:real 	
+
+		xmlns:si="https://gitlab1.ptb.de/D-SI-public/xml/tree/master/SI"	
+		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+		xsi:schemaLocation="https://gitlab1.ptb.de/D-SI-public/xml/tree/master/SI	    	
+							C:\myfolder\xml\Release\SI_Format_v1.0.2.xsd">
+	<si:value>2.34</si:value>
+	<si:unit>\metre</si:unit>
+	<si:label>length</si:label>
+	<si:dateTime>2018-11-16T12:30:01.67-01:00</si:dateTime>
+</si:real>