Merge pull request #14 from OCR-D/update-usage-readme

📝 update README to current CLI usage

README.md

@@ -23,8 +23,10 @@ https://qurator-data.de/sbb_binarization/
 
 ```sh
 sbb_binarize \
+  --patches \
   -m <directory with models> \
-  -i <image file> \
+  <input image> \
-  -p <set to true to let the model see the image divided into patches> \
+  <output image>
-  -s <directory where the results will be saved>`
 ```
+
+**Note** In virtually all cases, the `--patches` flag will improve results.