Merge pull request #3 from borekon/patch-1

Update README.md

Author: XhmikosR

README.md

@@ -29,3 +29,23 @@ Currently only 64-bit (x64) is targeted.
 2. Download and install [Visual Studio 2019](https://visualstudio.microsoft.com/downloads/) (any edition)
 3. Download [nasm](https://www.nasm.us/) and place `nasm.exe` somewhere into your `PATH`
 4. Open `jpegoptim.sln` and build, or run `build.bat`
+
+## Sample scripts
+
+**WARNING**: The following scripts optimize the images in place! Remember to make a backup before running them.
+
+Here's a sample script that loops through only the first-level subfolders in a folder optimizing all pictures:
+
+```bat
+for /f "tokens=*" %%i in ('dir /a:d /b') do (
+  jpegoptim.exe --preserve --strip-all --totals --verbose "%%i\*.jpg"
+)
+```
+
+Here's another sample script that loops through all subfolders in a folder optimizing all pictures:
+
+```bat
+for /f "delims=" %%i in ('dir /b /s *.jpg') do (
+  jpegoptim.exe --preserve --strip-all --verbose "%%i"
+)
+```