readme: The QP model from the paper [Quality Controlled Paraphrase Generation](https://aclanthology.org/2022.acl-long.45/)
  
  Important: read [this](https://github.com/IBM/quality-controlled-paraphrase-generation/issues/5#issuecomment-1238453742) before any use.
  
  More details on the model training and usage see in this [GitHub repo](https://github.com/IBM/quality-controlled-paraphrase-generation).