added test target to clean, build, and run tester tool

Makefile

@@ -64,7 +64,11 @@ $(LIBNAME).hpp: $(HDRS)
 		cat $$h >> $(LIBNAME).hpp; \
 	done	
 
-.PHONY: clean install
+.PHONY: test clean install
+
+test:
+	make -C tester clean
+	make -C tester && tester/tester
 
 clean:
 	$(RM) $(OBJS) $(DEPS) $(REALNAME) $(LIBNAME).hpp