title: Error in publishing to RPubs from Rstudio
body: <p>I installed the latest version of RStudio (RStudio 1.1.423 - Windows Vista / 7/8/10).
  I'm trying to publish to RPubs, but in Global Options does not appear the option for Rpubs.
  When I request Publish Document, the following error appears: Error occurred while executing method.</p>
  
  <p>Rprofile:
  I entered the command: options (rpubs.upload.method = "internal") at line 25 of Rprofile, but it did not resolve.</p>