Clean up Oct 30 class notes transcript, more of a Q&A format

Thought the chat transcript could do with some tweaking. 

- Added direct link to Drive By Contributions video
- Fenced code blocks don't seem to render well,
  went back to Markdown four-space indents
- Break up a debugging issue with SSL certificates into
  bit question & answer pairs

Filled in the answers/question for:

- What `git remote -v` does
- User vs Organisation accounts
- What diverged means
- Difference between pull and fetch

Dropped questions

- Best practices on open sourcing on GitHub
- Where to turn for consulting services after a repo FUBAR
- Starting conversations with a Pull Request
- Connecting GitHub client to a different remote

Not sure if the `========` was about merge conflict markers or if they normally had that in a file and wondering what would happen in that case of a merge conflict.

Some questions are orphans, not able to match every question up with an answer/reply.