Merge branch 'master' into fix_top_k_top_p_filtering

requirements.txt

-# PyTorch
-torch>=1.0.0
 # progress bars in model download and training scripts
 tqdm
 # Accessing files from S3 directly.

templates/adding_a_new_example_script/README.md

+# How to add a new example script in 🤗Transformers
+
+This folder provide a template for adding a new example script implementing a training or inference task with the models in the  🤗Transformers library.
+
+Currently only examples for PyTorch are provided which are adaptations of the library's SQuAD examples which implement single-GPU and distributed training with gradient accumulation and mixed-precision (using NVIDIA's apex library) to cover a reasonable range of use cases.