Merge pull request #45 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md

Author: Preetam

README.md

@@ -1,5 +1,7 @@
 Cistern [![Stories in Ready](https://badge.waffle.io/preetamjinka/cistern.png?label=ready&title=Ready)](https://waffle.io/preetamjinka/cistern)
 ===
+
+[![Join the chat at https://gitter.im/Preetam/cistern](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/Preetam/cistern?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 > Cisterns are often built to catch and store rainwater.
 
 License