Copyedit on Private Advanced Git Training at JavaZone

- Added "at JavaZone" to help differentiate in listing
- Signed Tags, Bisect could do with a step up to H3
- Forgoing bare URLs for linked words, for web aesthetic
- Bullets in Audience Requirements feels like H2 time
- Last Required bullet point may not be required
Merge pull request #201 from randomecho/copyedit-classnotes-javazone-20130910

Copyedit on Private Advanced Git Training at JavaZone