Update codesnippet in README

README.md

@@ -21,6 +21,12 @@ widget:
 
 ## Usage
 
+Install dependencies:
+```sh
+pip install fairseq sentencepiece g2p_en
+```
+
+Perform a generation:
 ```python
 from fairseq.checkpoint_utils import load_model_ensemble_and_task_from_hf_hub
 from fairseq.models.text_to_speech.hub_interface import TTSHubInterface
@@ -33,7 +39,7 @@ models, cfg, task = load_model_ensemble_and_task_from_hf_hub(
 )
 model = models[0]
 TTSHubInterface.update_cfg_with_data_cfg(cfg, task.data_cfg)
-generator = task.build_generator(model, cfg)
+generator = task.build_generator([model], cfg)
 
 text = "Hello, this is a test run."