update documentation

README.md

@@ -171,7 +171,20 @@ for str_target_concept, examples in learning_problems.items():
                                   "model": "TDL"})
     print(response.json())
 ```
-
+NCES (another scalable learner) can be used as follows
+```python
+import json
+import requests
+with open(f"LPs/Mutagenesis/lps.json") as json_file:
+    learning_problems = json.load(json_file)["problems"]
+for str_target_concept, examples in learning_problems.items():
+    response = requests.get('http://0.0.0.0:8000/cel',
+                            headers={'accept': 'application/json', 'Content-Type': 'application/json'},
+                            json={"pos": examples['positive_examples'],
+                                  "neg": examples['negative_examples'],
+                                  "model": "NCES"})
+    print(response.json())
+```
 
 </details>