Merge pull request #26 from limenet/master

fixed typos in chapter 3, 5
Finished typing all chapters, other

- Added a couple of drawings to chapters 3-5
- Small correction to chapter 1
- Added file to gitIgnore
Updated readme to reflect progress
Updated build scripts to deal with errors, new PDF
Changed diagram to b/w from color, other

- Couple of layout fixes for chapter 7
Generated New PDFs
Chapter 9 corrections from @limenet
updated readme to reflect progress
quick update
Generated New PDFs
fixed typos in chapter 9