+ Tests/ReferenceData/README.md

Tests/ReferenceData/README.md

+#### Reference data for functional tests
+
+Core
+: used by Tests/Functional/Core/CoreSpecial
+
+PyCore
+: used by Tests/Functional/Tests/Functional/Python/PyCore
+
+PyPersist
+: used by Tests/Functional/Tests/Functional/Python/PyPersist
+
+Std:
+: used by Core, Python, and GUI standard tests