Add a couple of questions and update notes

As there was some confusion on how this repository content should be
used.

scripts/count_questions.sh

@@ -1,3 +1,4 @@
 #!/bin/bash
 
-cat README.md | grep \<\/summary\> | wc -l
+# 5 is the number of scenario questions.
+expr 5 + $(cat README.md | grep \<\/summary\> | wc -l)