Add getting-started.html link and placeholder
alternative navigation styling
Merge pull request #27 from libgit2/getting-started-nav

Alternative navigation styling
Convert to Jekyll layout/page form
Change up nav, add docs landing page
Promote API-docs link to nav bar
Match nav and logo baselines
Use github-pages gem
Update nav words
Direction for content
Configure jekyll for fenced code blocks
Fix CSS for "pre code" blocks
Generate header ids
Indent code blocks
"Highlight" syntax
Adjust paragraph spacing
"Init" example
Building/Linking guide: VS Edition
CMake options
Fix padding for pre>code first lines