Build: add Windows standalone build file and screenshot

README.md

@@ -2,18 +2,23 @@
 
 Learning project
 
+![Screenshot on Ubuntu 22.04](./docs/screenshot/ubuntu22.png)
+
 ## Implemented features
 - Left click (reveal cells), right click (mark cell), left+right click (validate cell)
 - Configurable difficulty
 - Restart popup with button at win/lose
 - Display timer and remaining mines
 
 ## Build and Run
-Run with Python environement:
-- (powershell) `python mine.py`
-- (linux) `python3 mine.py`
+Linux
+- Run with Python environement: `python3 mine.py`
+
+Windows
+- Run with Python environement (powershell): `python.exe mine.py`
+- Build standalone executable for Windows using [py2exe](https://github.com/py2exe/py2exe) (powershell): `python.exe freeze.py`
+  - The result build is in `./dist`, double click `mine.exe` to run
 
 ## Development tools
 - python3 on Linux / Windows
 - gedit text editor
-

freeze.py

@@ -0,0 +1,12 @@
+# Build standalone executable for Windows
+
+from py2exe import freeze
+
+freeze(windows=['mine.py'],
+       options={'bundle_files': 1, # As we use only Python standard library
+                'compressed': True},
+       version_info={'copyright': "Yuxiao Mao",
+                     'version': "1.0.0",
+                     'product_name': "Minesweeper",
+                     "product_version": "1.0.0"}
+       )