fix syntax error in output type yaml
rebuild with new html template
add documentation on slidy presentation format
docs on additional slidy options
slidy: docs on custom css and text size
regenerate menus with slidy
move slidy after ioslides in menu
tufte handout docs
refine docs
very minor change to fix misspelling of interactive in authoring - advanced
Merge pull request #217 from timelyportfolio/patch-1

very minor change to fix misspelling of interactive in authoring - advan...
link to updated versions of rstudio and rmarkdown
Merge branch 'gh-pages' of github.com:rstudio/rmarkdown into gh-pages
add docs on htm_vignette
add docs on html_vignette format
cross reference html_vignette format from developer docs
sync with #239; closes #243
put % before \Vignette*