- Addec 'make check' to the standard Makefile

diff --git a/tests/Makefile b/tests/Makefile
index 0954def..e254aa4 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -79,3 +79,6 @@
 clean:
 	rm -f $(APPS) *.c
 
+check: $(APPS)
+	echo "Running checks"
+	for i in $(APPS); do echo " - $${i}"; ./$${i} | grep PASSED; done