Fix bug in run_openai_gpt.py file.
Add a example for add special tokens to OpenAIGPTTokenizer, and resize the embedding layer of OpenAIGPTModel.
run_gpt2.py file has been test on ROCStories corpus, it runs fine and return auccuracy of 76%, lower than GPT1.<|||||>This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.
