add AACL-IJCNLP 2020

[Miguel Fierro]

December 4–7, 2020
Suzhou, China

Title: A Hitchhikers guide to using Transformers for multiple scenarios and languages
Authors: Said Bleik, Miguel Fierro, Hong Lu, Daisy Deng, Yijing Chen, Heather Spetalnick, Tao Wu and Sharat Chikkerur

http://aacl2020.org/program/tutorials/#t5-a-hitchhikers-guide-to-using-transformers-for-multiple-scenarios-and-languages