Update README.md

83507a5f · Anh Nguyen-Tuong · 300e87e2 · 83507a5f
Commit 83507a5f 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_HOME
+cd <zafl_top_level_directory>
 . set_env_vars
 ```