Merge pull request #10 from gitter-badger/gitter-badge

Add a Gitter chat badge to README.md

Author: brandwe

README.md

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 #Windows Azure Active Directory Sample REST API Service for Node.js using MongoDB and Restify
 
+[![Join the chat at https://gitter.im/AzureADSamples/WebAPI-Nodejs](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/AzureADSamples/WebAPI-Nodejs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
 This Node.js server will give you with a quick and easy way to set up a REST API Service that's integrated with Windows Azure Active Directory for API protection using the OAuth2 protocol. The sample server included in the download are designed to run on any platform.
 
 This REST API server is built using Restify and MongoDB with the following features: