Added version attribute to schemas. refs #8221

Code/Mantid/instrument/Schema/FacilitiesSchema.xsd

 <?xml version="1.0" encoding="utf-8"?>
-<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+<xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" attributeFormDefault="unqualified" elementFormDefault="qualified" 
+           xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0">
   <xs:element name="facilities">
     <xs:complexType>
       <xs:choice maxOccurs="unbounded">
@@ -100,4 +101,4 @@
       </xs:choice>
     </xs:complexType>
   </xs:element>
-</xs:schema>
\ No newline at end of file
+</xs:schema>

Code/Mantid/instrument/Schema/GroupingSchema.xsd

 <?xml version="1.0" encoding="utf-8"?>
-<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0">
   <xs:element name ="detector-grouping">
     <xs:complexType>
       <xs:choice maxOccurs="unbounded">

Code/Mantid/instrument/Schema/IDFSchema.xsd

@@ -3,6 +3,7 @@
   <xs:schema attributeFormDefault="unqualified" 
              elementFormDefault="qualified" 
              xmlns:xs="http://www.w3.org/2001/XMLSchema"
+             version="1.0"
              >
   <!--Define customDate Type-->
     <xs:simpleType name="customDate">

Code/Mantid/instrument/Schema/ParameterFileSchema.xsd

 <?xml version="1.0" encoding="utf-8"?>
-<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" version="1.0">
 
 
   <!-- Define Cartesian Coordinates Attribute Group-->