This may be very simple, but I cannot find the right syntax despite searching through postings:
I want to create a hyperlink on my shiny web page which when clicked
create a folder called 'www' inside your shiny app directory 'appFolder'.
Put the file 'readme.txt' in the www folder.
File path is href="readme.txt"
You have to use 'runApp(appFolder)' command to start your shiny app. It then can access all local files inside the www folder.