Update README.md

Author: rahul-raj

09_Using_RL4J_for_Reinforcement learning/README.md

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+### Chapter 9 : **Using RL4J for Reinforcement learning**
+
+In this chapter, you will learn how to develop a reinforcement learning agent that can learn to play the Malmo game using RL4J.
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+
+#### Instructions 
+
+ - Navigate to **sourceCode/cookbookapp** directory and import the project using *pom.xml* file.
+ - As a pre-requisite, Project Malmo needs to be installed and configured in your system. Follow the detailed instructions mentioned in the cookbook.
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+
+