Update README.md

Author: dipanjanS

README.md

@@ -68,7 +68,6 @@ Print ISBN: 978-1-4842-2387-1   Online ISBN: 978-1-4842-2388-8   DOI:
 </div>
 
 <br>
-
 This book:
  - Provides complete coverage of the major concepts and 
  techniques of natural language processing (NLP) and text analytics
@@ -83,3 +82,12 @@ This book:
 
 ## Contents  
 
+ - Chapter 1: Natural Language Basics
+ - Chapter 2: Python Refresher
+ - Chapter 3: Processing and Understanding Text
+ - Chapter 4: Text Classification
+ - Chapter 5: Text Summarization
+ - Chapter 6: Text Similarity and Clustering
+ - Chapter 7: Semantic and Sentiment Analysis
+
+