added info to ReadMe

armarx_memory/ltm/ReadMe.md

@@ -95,6 +95,12 @@ provider_segment.addEntity(entity=entity)
 
 # storing itself is simple:
 entity_instance.store()
+
+# if you want to store the full memory:
+for coreSegment in memory.coreSegments.values():
+        for providerSegment in coreSegment.providerSegments.values():
+            for entity in providerSegment.entities.values():
+                entity.store()  # from here on the functions are defined recursively
 ```
 
 If you already have the entity instance itself (i.e. from querying the working memory), you can simply use the last line of code from above.