added Cognitive Class to AI Courses

Author: mrsaeeddev

README.md

@@ -14,6 +14,7 @@
 - Udacity’s Intro to Artificial Intelligence - https://www.udacity.com/course/intro-to-artificial-intelligence--cs271
 - Artificial Intelligence: Principles and Techniques By Stanford - http://web.stanford.edu/class/cs221/
 - Udacity’s Artificial Intelligence for Robotics by Georgia Tech - https://www.udacity.com/course/artificial-intelligence-for-robotics--cs373
+- IBM's Data Science and Cognitive Computing courses - https://cognitiveclass.ai/
 
 ### FREE MACHINE LEARNING COURSES:
 - Machine Learning by Andrew NG - https://www.coursera.org/learn/machine-learning