Add a from_pretrained example to README.md

README.md

@@ -30,6 +30,28 @@ pip install -e .
 import combo
 ```
 
+Pretrained model usage:
+
+```python
+from combo.predict import COMBO
+c = COMBO.from_pretrained("model")
+prediction = c("To jest przykładowe zdanie.")
+
+print("{:15} {:15} {:10} {:10} {:10}".format('TOKEN', 'LEMMA', 'UPOS', 'HEAD', 'DEPREL'))
+for token in prediction.tokens:
+    print("{:15} {:15} {:10} {:10} {:10}".format(token.text, token.lemma, token.upostag, token.head, token.deprel))
+```
+
+Example output:
+```
+TOKEN           LEMMA           UPOS       HEAD       DEPREL
+To              to              AUX                 4 cop       
+jest            być             AUX                 4 cop       
+przykładowe     przykładowy     ADJ                 4 amod      
+zdanie          zdanie          NOUN                0 root      
+.               .               PUNCT               4 punct  
+```
+
 ## Use COMBO CLI
 
 The minimal training example (make sure to download some conllu training and validation files)