New footnotes

I’ve become aware that some readers might not be familiar with either puritan expository technique, monastic lectio divina, or both. Therefore I’ve added some footnotes to the Why ‘prescriptions’ from God’s word? page to briefly explain these, so that it’s more obvious how they’ve influenced the ‘scripture-medicine’ spiritual discipline. Also, I’ve added a very brief summary of the method, which might be helpful/useful.