dcernst/IBL-IntroToProof — pull request #18 by jasongrout (2014-02-18 18:36:33+00:00)
Title: Put the first chapter's worth of notes into book form.

I created a new 'book' directory, where I'm stripping down the files and consolidating them into a book form. And I found that we duplicated number 1.21 too....