fixed some typos and added some comments about a few questions
fixed some typos and added some comments about a few questions

wrshoemaker/QB-2017,QuantitativeBiodiversity/QB-2017,jaytlennon/QB-2017,wrshoemaker/QB-2017,wrshoemaker/QB-2017,jaytlennon/QB-2017,klocey/QB-2017,klocey/QB-2017,QuantitativeBiodiversity/QB-2017,jaytlennon/QB-2017,QuantitativeBiodiversity/QB-2017,klocey/QB-2017