Update README.md

updated suggested setwd path

README.md

@@ -59,7 +59,7 @@ Steps:
 1. Fire up emacs
 2. `Alt-x` and `R` gets you an R session
 3. If asked, set your start working directory, e.g. 
-`setwd('/home/user/Desktop/ISB401/')` 
+`setwd('/mnt/scratch/user/')` 
 (where `user` is an alias for your username)
 4. Enter `library(shinyscreen)`
 5. Enter `options(browser="chromium")`