title: knitR/RMD: select output folder
body: <p>I'm using a RMD file to create a package vignette. My. rmd file is stored in </p>
  
  <pre><code> .../path_to_package/vignettes/vignette.rmd
  </code></pre>
  
  <p>When creating a PDF the last line in the R Markdown console window is "Output created: /tmp/....". </p>
  
  <p>How is it possible to create the PDF directly in the vignettes folder and not in a /tmp/.. folder?</p>
  
  <p>I'm using Ubuntu 14.04 LTS and R 3.3.0, rmarkdown 0.9.6 and knitr 1.13.</p>
  
  <p>Regards,</p>
  
  <p>Johannes</p>