Add comments to test suite

test.sh

 #!/bin/bash
 
-# Ensure proper exit code
-
+# Please don't write a test suite like this...
 
+# Ensure proper exit code
 ./hello || ( echo "Bad return code" && exit 1 )
+
+# Ensure proper output
 [ "$(./hello)" = "Hello World!" ] || ( echo "Wrong printout!: $(./hello)" && exit 1)