Update README.md

a8ddb9f6 · Anh Nguyen-Tuong · 83507a5f · a8ddb9f6
Commit a8ddb9f6 authored 6 years ago by Anh Nguyen-Tuong
--- a/README.md
+++ b/README.md
@@ -58,7 +58,7 @@ cd $IDAROOT

 Before running Zafl, always make sure to have your environment variable set
 ```bash
-cd <zafl_top_level_directory>
+cd <zafl_top_level_directory>   # in this example, the top level dir is: zafl_umbrella
 . set_env_vars
 ```