[R] Vignette using knitr, devtools, and R markdown

[Glenn Schultz]

Hi All,
I am writing a Vignette with Knitr using devtools ... actually quite awesome.  However, I would like to create a table of contents.  I have read the knitr and r markdown instructions on TOC and I can create a TOC in a markdown document but I cannot translate the command to a vignette - maybe doing something wrong.  Does anyone know if I can create a TOC in a vignette using r-markdown and devtools?

Glenn