Converting xaringan slides to PDF
    
     
    slide2pdf(f)
    
    Arguments
    
    
    
      | f | 
      The relative path to the R Markdown file for the xaringan presentation  | 
    
    
    
    Value
    The function produces a PDF in the folder where the HTML version of the file resides for web deployment
    
    Examples
    # slide2pdf('slides/lectures/00-Introduction.Rmd')