Foundations slide deck chapter tidy, removed extraneous slides, added GitHub chapter placeholders
HydeSlide traverse structure changed: Chapters left-right, Sections up-down
Removed chapter title from Trainers to avoid extraneous chapter title slide
Added HydeSlides chapter title injection to each section
Added chapter values to all slides containing placeholder, added git logo, restructured trainer slides
Merge pull request #48 from github/foundations-tidy

New HydeSlides Features, Foundations Content