Missing backticks in 2013-10-09 classnotes; Fix some bullets

Also rewrote the Ed Note to be an example as it read like an example case already.

Certain "Cecompose" is a typo. 

Wasn't sure about "before rebasing it before merging" (under "Merging Strategies" → Reroll) since that doesn't read as a sentence fragment on its own, that it might be missing a comma, or part of the previous list item.