Remove jesyspa from editors

He's an author now, so he doesn't need to be an editor anymore.
Edited about half of the document.
add a test file
Remove the test file.

It was there to test wei's build system.
Merge branch 'develop' into f-ch2edits
Add a macro for italicizing.
Functions get their own section.
\i is now a \renewcommand.
Merge pull request #80 from pharpend/f-ch2edits

Edits to chapter 2