add very simple test

.gitignore

@@ -1,2 +1,3 @@
 copythis.circleci/config/
 copythis.circleci/config.yml
+.tmp/

Makefile

@@ -0,0 +1,16 @@
+# Do not copy this Makefile to your project.
+# This Makefile is to help with maintenance and testing
+# of the stuff in copythis.circleci.
+
+# TD is the test directory. It should be in .gitignore.
+TD       := ".tmp/test"
+TESTMAKE := make -C $(TD)
+
+# For now, test just invokes ci-config and ci-verify
+# and checks they exit successfully.
+.PHONY: test
+test:
+	rm -rf $(TD); mkdir -p $(TD); cp copythis.circleci/Makefile $(TD)/
+	$(TESTMAKE) init
+	$(TESTMAKE) ci-config
+	$(TESTMAKE) ci-verify