Review documention for prefixes and suffixes and namesapces and fix any issues

[marcnoon]

Focus on namespaces first, then prefixes, and finally suffixes.

Use readme for namespaces and prefixes and suffixes to help find errors and as a basic reference.

Ensure namespaces is working and there are some basic unit tests.

Add some useability test to verify namespaces work consistently and can save Json or xml files with namespaces.

Add some useability test to verify namespaces work consistently and can read Json or xml files with namespaces.

If there is time do same for prefixes and suffixes.