'make test' now runs expansion, schema_validation, and references unit tests.

expandybird/Makefile

@@ -37,6 +37,12 @@ expandybird:
 	go get -v ./...
 	go install -v ./...
 
+test:
+	python expansion/expansion_test.py && \
+	python expansion/schema_validation_test.py && \
+	python expansion/references_test.py
+
+
 clean:
 	-docker rmi $(PREFIX)/$(IMAGE):$(TAG)
 	rm -f expandybird