basic skeleton for property search
added toString methods for properties and objects
corrected some class names
method to return SPARQL query to get properties of a class
added methods to iterate through datatype properties
added more methods to iterate through datatype properties
added an example class to test generation of properties
renamed the class Property to RDFClassProperty
added a class from range of properties
included count in RDFCLassProperty
added a method to get count of properties
added a variable multiplePropertiesForSameNode in RDFClassProperty
added a logger message when executing a query
some fix in count logic