add usage section

README.md

@@ -31,7 +31,16 @@ any harmful content generated by GPT2 should not be used in anywhere.
 
 ## Training and evaluation data
 training and validation done on goodreads dataset LABR 80% for trainng and 20% for testing
-## Training procedure
+## Usage
+
+```
+from transformers import AutoTokenizer, AutoModelForCausalLM
+
+tokenizer = AutoTokenizer.from_pretrained("mofawzy/argpt2-goodreads")
+
+model = AutoModelForCausalLM.from_pretrained("mofawzy/argpt2-goodreads")
+
+```
 
 ### Training hyperparameters