Please understand that these notes are informal and written on the fly, as the breakout session proceeds.
Actually, this file merely gives a link to the notes from Danny’s Shiny tutorial.
These notes are in the form of an Rmd (not yet HTML!) file, so download it and then run it. Alternatively, use this command from within R:
download.file("http://cvc.mosaic-web.org/Summer2016/Learn/Shiny-breakout/Notes-on-shiny.Rmd", destfile = "Notes-on-shiny.Rmd")
Then open the newly downloaded file in the RStudio editor.