Adds stub clean task
diff --git a/Makefile b/Makefile
index b399038..2d387e0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,8 @@
 
 .PHONY:
+clean:
+	@true
+
+.PHONY:
 test:
 	@true