basic working stub for an xml builder.

Signed-off-by: Robert L. Carpenter <robacarp@gmail.com>
Allow for namespacing, adding children after definition

Signed-off-by: Robert L. Carpenter <robacarp@gmail.com>
"Upgrade" to DOMDocument.

Signed-off-by: Robert L. Carpenter <robacarp@gmail.com>
Add usage doc.

Signed-off-by: Robert L. Carpenter <robacarp@gmail.com>
Port \Spark\XmlBuilder to \SparkLib\Xml\Builder