Enhanced the documentation

README.md

@@ -1,9 +1,19 @@
 # Test data loader
 
-A Docker image that loads test data into a FHIR store.
+A Docker image that generates test data and loads it into a FHIR store.
 
 The data is generated by [bbmri-fhir-gen](https://github.com/samply/bbmri-fhir-gen), according to the [BBMRI/GBA FHIR profile](https://samply.github.io/bbmri-fhir-ig/overview.html).
 
+The following FHIR resource types will be present in the generated data:
+
+- Patient
+- Observation
+- Condition
+- Specimen
+- Organization (for collection and site)
+
+The user can control the naumber of patients generated. The remaining resources are created in proportion to the number of patients.
+
 ## Quickstart
 
 The supplied `docker-compose.yml` file can be used for trying things out. It contains a FHIR store (Blaze) and the test data loader. Start it like this: