update bookmaker to ToT

more image docs, still not done
add ability to comment out non-working examples easily
start work on additional self-checks
clean up use of this-> in docs

TBR=reed@google.com
Docs-Preview: https://skia.org/?cl=91720
Bug: skia:6898
Change-Id: I706ab8145290e53ab67d3f509ccf4e1225adb3c3
Reviewed-on: https://skia-review.googlesource.com/91720
Commit-Queue: Cary Clark <caryclark@skia.org>
Reviewed-by: Cary Clark <caryclark@skia.org>
29 files changed