add CLUE benchmark link

https://github.com/CLUEbenchmark/CLUE

README.md

@@ -4,6 +4,8 @@ The purpose of this repository is to explore text classification methods in NLP
 
 #### Update: 
 
+Language Understanding Evaluation benchmark for Chinese( <a href='https://github.com/CLUEbenchmark/CLUE'>CLUE benchmark<a/>): run 10 tasks & 9 baselines with one line of code, performance comparision with details.
+
 Releasing Pre-trained Model of <a href="https://github.com/brightmart/albert_zh">ALBERT_Chinese</a> Training with 30G+ Raw Chinese Corpus, xxlarge, xlarge and more, Target to match State of the Art performance in Chinese, 2019-Oct-7, During the National Day of China!
 
 <a href='https://github.com/brightmart/nlp_chinese_corpus'>Large Amount of Chinese Corpus for NLP Available!</a>