Add commit direct acyclic graph slide
Add Forking diagram
Correct commit hash typo
Rearrange Foundation deck chapter order

Improve linear order of chapters for better cohesion and application
of examples.
Add generic CC-BY license text block
Include license in header
Add license link formatting
Remove all original Page style selectors (deprecated)
Change direct CC-BY link to internal page
Clean up Page default layout structure (for intiial use with License)
Add first pass alternate-look generic page styling
Merge pull request #22 from github/license-update

License and attribution
Simplify Fork diagram build steps
Merge pull request #20 from github/diagrams

Add additional visuals/diagrams to slide decks
Typos on Foundations cheat sheet; Use example.com as example

Note about <variable> seemed a bit clunky reading-wise.

Torvalds was misspelt.

Prefer use of example.com since the other is real, parked.
Merge pull request #23 from randomecho/typos-foundations

Typos on Foundations cheat sheet, make use of example.com
Rearrange Foundations to bring Network/GitHub earlier into content review
Update to include new "generic" page styles
Merge pull request #24 from github/rake-sass-update

Update to include new "generic" page styles
Fix _layout stylesheet conditions, simplify logic and relative paths