Merge pull request #6 from GCheung55/master

Fix erroneous toc links and heading links.
Don't default all documentation headings to h1, but also use h6, h5 and h4
A more clever solution for creating h<1-6> tags.
Right, fix documentation heading tags now.
Select the version.
Correction for an issue with <code> nested inside <pre> and use of global styles for both
Merge pull request #7 from GCheung55/mark_selected_version

Select the version in docs.
Updated style for selected Versions and minor changes
DRY the docs jade templates
Fall back to the README.md if a project does not have a doc/project.md file (moofx or slick)
Use correct callback