Merge pull request #40 from sealocal/master

Chapter 5 (through section 5.3.1) progress update
break up large file into multiple pieces
Revert "Chapter 5 (through section 5.3.1) progress update"
Merge pull request #43 from codefellows/revert-40-master

Revert "Chapter 5 (through section 5.3.1) progress update"
Merge pull request #42 from codefellows/marcos_edits

break up large file into multiple pieces
edit typos in summary
Adding the "--spec" flag to 4 files. This way the autogenerated files will be
consistent in spec format, rather than test format.
Update deploy_to_heroku.md
Merge pull request #46 from DeirdreAllison/patch-1

Update deploy_to_heroku.md
Merge pull request #45 from petemmitchell/master

Adding the "--spec" flag to 4 files.
Chapter 5 (through section 5.3.1) progress update
format Ch 5 in sections and subsections