update README

Author: Var7600

README.md

@@ -3,7 +3,7 @@
 [![unit-test python](https://github.com/Var7600/VHDL-TestBench/actions/workflows/python-app.yml/badge.svg)](https://github.com/Var7600/VHDL-TestBench/actions/workflows/python-app.yml)
 ---
 
-A simple python script to generate a  VHDL testbench template  given an entity-architecture declaration  passed as argument(s) file(s).
+**A  python script to generate a  VHDL testbench template  given an entity-architecture declaration  passed as file(s) argument(s).**
 
 # Demo
 
@@ -20,7 +20,22 @@ https://github.com/Var7600/VHDL-TestBench/assets/77991946/c12ecadf-ef14-4735-a7e
 
 - you can launch the script without a argument to see the Help and example of usages
 
-  ```
+  1. **Linux/MAC**
+     
+     ```bash
+     > chmod +x testbench_generator.py
+     > ./testbench_generator.py
+     Usage: python3 testbench_generator.py [VHDL FILE]. . .
+     
+         generate testbench template of VHDL FILE(s) to current working directory
+     
+         Examples:
+          python3 testbench_generator.py adder.vhdl mux.vhdl
+     ```
+     
+     2. **Windows**
+  
+  ```bash
   > python3 testbench_generator.py
   Usage: python3 testbench_generator.py [VHDL FILE]. . .