Running treelstm in DGX1

Recent works by [Tai et. al. 2015](https://arxiv.org/abs/1503.00075) has shown that treelstm performs better than lstm. They applied the algorithm on Sentence Relation and Sentiment Analysis. (Detailed information on treelstm can be found in https://github.com/stanfordnlp/treelstm) In my project, I would like to train a classifier using treelstm and compare its performance with traditional classifiers (Naive Bayes etc). The main purpose of this write up is to share and document the setting up of the environment to run treelstm on the CPU or GPU in NVIDIA-DGX1.