PDF generation updates: working version mimicing webBook style

This PR brings the PDF generation pipeline up to speed with the webBook styling.

The PDF generation works through a python script under `scripts/`.  It generations `ofBook.pdf`and `scripts/ofBook.tex`.  The latter is useful for debugging - pandoc isn't too helpful when building a PDF fails.  Opening up ofBook.tex in TeXworks makes debugging easier.  It also allows for testing of style/layout before changing the python script.

Following the organization from @ofZach's pending PR (#68), I moved all the chapters to `chapters/` and removed the chapter numbering.  Two of the chapters needed small edits to get them working with the latex package for styling code (re: #69).