Demo linkes for image diff and 3D file diffs
Merge branch 'master' into tune-intermediate-curriculum
Remove numbers from all chapters
Remove numbers from all chapters
Mac desktop app preferences screenshot
Added first chapter of content to intermediate
Progress on intermediate curriculum
Add network interaction section to Intermediate
Finished skeleton of Intermediate
Unified curriculum space after code blocks, but not before
More polished Intermediate curriculum
Merge pull request #181 from github/tune-intermediate-curriculum

Fleshing out intermediate curriculum