Make 'make test' easier and document it
diff --git a/Makefile b/Makefile
index 2ee433d..84722c5 100644
--- a/Makefile
+++ b/Makefile
@@ -57,6 +57,9 @@
 	done < $(TARGET_DIR)/filelist$*.txt
 	tail -n 1 xslt/idsCorpus-template.xml  >> $@
 
+test: YEARS := 13 18
+test: SRC_DIR=test/resources/DNB
+
 test: models/dereko_domains_s.classifier i5valid test/test-xml.sh
 	bash test/test-xml.sh