Add README to python demo scripts
Add README to python demo scripts

GeoscienceAustralia/Geodesy-Web-Services,GeoscienceAustralia/Geodesy-Web-Services,GeoscienceAustralia/Geodesy-Web-Services,GeoscienceAustralia/geodesy-domain-model,GeoscienceAustralia/geodesy-domain-model,GeoscienceAustralia/Geodesy-Web-Services