Doc improved

README.md

@@ -1476,13 +1476,18 @@ path to gem5, for example in the *QtCreator under Projects > Build
 GEM5=/path/to/gem5/
 ```
 
+Example:
+
+```
+GEM5=$HOME/gem5_tnt/gem5
+```
+
 Optionally, export environment variables in your **~/.bashrc** file or
 equivalent and open a new terminal:
 
 ```bash
-# In this example gem5 is located at $HOME/gem5 (that is your home folder).
-# Modify the variable to use the correct location.
-export GEM5=$HOME/gem5
+# In this example gem5 is located at $HOME/gem5_tnt/gem5.
+export GEM5=$HOME/gem5_tnt/gem5
 
 # Add the folder containing libgem5_opt.so to the list where libraries should
 # be searched for.