added Didi Chuxing to AI Research at Big Companies list

Author: mrsaeeddev

README.md

@@ -52,7 +52,8 @@
 - AI Research at Huawei - https://www.huawei.com/en/industry-insights/technology/ai
 - AI Research at Samsung - https://research.samsung.com/artificial-intelligence
 - AI at Alibaba - https://damo.alibaba.com/labs/ai
-- Data Science at Gojek - https://blog.gojekengineering.com/data-science/home
+- Data Science at Gojek - https://blog.gojekengineering.com/data-science/home 
+- Intelligent Transportation Technology and Security at Didi Chuxing - http://www.didi-labs.com/
 
 ### DEVELOPER RESOURCES:
 - Apple - https://developer.apple.com/machine-learning/