Feature/mwop review

Here's my full review. Some of it is contained as direct patches of the text; I did this infrequently, and tried to keep such changes to technical writing aspects (grammar, punctuation, etc.).

The bulk of the review is in mwop-notes.markdown, with a section heading for each file, and sub-headings matching the headings of each file. Feel free to take or leave as little or as much of it as you want.

Overall, the examples are solid -- I felt primarily that there was information that could be expanded on or given more detail in order to ensure the readers aren't left with more questions than answers.

Would be nice to see a "conclusion" chapter, and maybe an appendix with references -- in the style of "teach a man to fish."