Update README.md

Author: dipanjanS

README.md

@@ -10,6 +10,8 @@ in analyzing text data. This repository contains datasets and code used in this
 I will also be adding various notebooks and bonus content here from time to time. 
 Keep watching this space!
 
+## Help Needed on porting code to Python 3.x. Please check [this link](https://github.com/dipanjanS/text-analytics-with-python/issues/3) if you are interested in contributing.
+
 #### TODO
 
 - [x] Add code used in the book