Adding run.sh used to train using transformers/example/question_answering code.

run.sh

@@ -0,0 +1,15 @@
+python run_qa.py \
+  --model_name_or_path bert-large-uncased-whole-word-masking  \
+  --dataset_name squad_v2 \
+  --do_train \
+  --do_eval \
+  --save_steps 2500 \
+  --eval_steps 2500 \
+  --evaluation_strategy steps \
+  --per_device_train_batch_size 12 \
+  --learning_rate 3e-5 \
+  --num_train_epochs 2 \
+  --max_seq_length 384 \
+  --doc_stride 128 \
+  --output_dir /data_2to/devel_data/nn_pruning/output/teacher/squadv2-large-wwm \
+  --version_2_with_negative 1