Starter kit license?

#1

The original issue: https://github.com/AIcrowd/neurips2019_disentanglement_challenge_starter_kit/issues/14

We are planning to create our-own lib for disentanglement representation learning (The lib is not for the challenge).
Our lib is based on this repository a bit, but I could not find the license file.

Do you have any license for this repo?
It is very helpful if your license allows us to modify and re-distribute this repo.
Thank you in advance!