add bert models to list
@@ -20,6 +20,7 @@ This directory contains a variety of different agents which use ParlAI's interfa
## Text-based neural networks
+- **bert_ranker**: BERT-based bi-ranker and cross-ranker retrieval models
- **drqa**: context-based question answering system
- **fairseq**: provides access to models from FAIR's FairSeq library (github.com/facebookresearch/fairseq)
- **language_model**: simple RNN-based language model
