Merge pull request #45 from cshaver88/master

Cayla's Changes
Chapter1

Trying to see if extending is ok to do.
changes to stocks and quizzes
Merge pull request #46 from cshaver88/master

Cayla's Changes
Merge pull request #47 from wolberd/july9

changes to stocks and quizzes
Chapter1

Trying to see if extending is ok to do.
Quiz Fixes

Added blocks images for Ch 5, 6, &8
Merge remote-tracking branch 'origin/test' into test
yaml

aiorg
Merge remote-tracking branch 'origin/test'