add sample experiment code on top of ridmi

Author: Alvant

README.md

@@ -53,6 +53,40 @@ Consider using TopicNet if:
     </em>
 </p>
 
+And here is sample code of the TopicNet baseline experiment:
+
+```python
+from topicnet.cooking_machine.config_parser import (
+    build_experiment_environment_from_yaml_config
+)
+
+from topicnet.cooking_machine.recipes import (
+    ARTM_baseline as config_string
+)
+
+dataset_path = '/data/datasets/NIPS/dataset.csv'
+
+specific_topics   = [f'spc_topic_{i}' for i in range(19)]
+background_topics = [f'bcg_topic_{i}' for i in range( 1)]
+
+config_string = config_string.format(
+    dataset_path=dataset_path,
+    modality_list=['@word'],
+    main_modality='@word',
+    specific_topics=specific_topics,
+    background_topics=background_topics,
+)
+experiment, dataset = (
+    build_experiment_environment_from_yaml_config(
+        yaml_string=config_string,
+        experiment_id='sample_config',
+        save_path='sample_save_path',
+    )
+)
+experiment.run(dataset)
+best_model = experiment.select('PerplexityScore@all -> min')[0]
+```
+
 
 ## How to start
 
@@ -235,11 +269,11 @@ HTML(html_view)
 
 # FAQ
 
-#### In the example we used to write vw modality like **@modality**, is it a VowpallWabbit format?
+### In the example we used to write vw modality like **@modality**, is it a VowpallWabbit format?
 
 It is a convention to write data designating modalities with @ sign taken by TopicNet from BigARTM.
 
-#### CubeCreator helps to perform a grid search over initial model parameters. How can I do it with modalities?
+### CubeCreator helps to perform a grid search over initial model parameters. How can I do it with modalities?
 
 Modality search space can be defined using standart library logic like: