Mostly adapted from here.
python train.py
This will do a grid search on a fraction of the PTB dataset and store
checkpoints of the model in a file (default is ./model.pt).
python generate.py
The default setting is that during training in train.py a checkpoint model
is written to ./model.pt by default. This model checkpoint is also used
for generation in generate.py. The generated text is written to
generated.txt by default.