Polished Document API.
Improved Console.
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Updated README.md
Renamed Section to Heading.
Updated README.md
Updated README.md
Improved console.
Merge branch 'gh-pages' of github.com:substance/document into gh-pages
Fixed some glitches.
More tweaks.