Add link to wiki page for Weds. keynote; tweak newcomers session notes
Add notes on Megan Smith, Satya Nadella, and Maria Klawe speeches

Thursday featured a keynote speech from Megan Smith (CTO of the USA),
and an interview of Satya Nadella (CEO of Microsoft) by Maria Klawe
(President of Harvey Mudd College.)

I only finished formatting the notes on Satya's interview about half way
- still working on that.