Iteration 3 edits (Milford)

Edits for chapter 1 based on comments from Jana Milford
Iteration 3 edits (milford)

Editing chapter 2 according to suggestions given by Jana Milford
Summary

Preiteration draft
Iteration 1 edit dcn

Iteration 1 edits based on comments from David Noone.
Merge branch 'Chapter-4'
Merge branch 'Chapter-1'
Merge branch 'Chapter-2'