add usage

README.md

@@ -59,3 +59,9 @@ Ensure that all links in your report and slides are accessible
 3. Trainning dataset: 
     1. [English Handwritten Characters](https://www.kaggle.com/datasets/dhruvildave/english-handwritten-characters-dataset)   Size: 13.7 MB / 25.2 MB(after unzip)
     2. [Handwritten Digits and English Characters](https://www.kaggle.com/datasets/hrishabhtiwari/handwritten-digits-and-english-characters/) Size: 85 MB / 545.57 MB(after unzip)
+
+4. Usage
+
+    ```python train-ocr-model.py -d eng_dataset/dataset_mnist.csv -s -m new-model.keras -p result.png```
+
+    ```python run-ocr-model.py -i simple_ocr_example/test_cases/hand_writing/1-image.png -m new-model.keras -s 28```