Merge pull request #3169 from m5r/develop

Updated the README

Author: Kaylyn Sigler

README.markdown

@@ -1,7 +1,12 @@
+![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
+
 # SendGrid Documentation
 
 [![Build Status](https://travis-ci.org/sendgrid/docs.svg?branch=develop)](https://travis-ci.org/sendgrid/docs)
 [![Dependency Status](https://gemnasium.com/sendgrid/docs.svg)](https://gemnasium.com/sendgrid/docs)
+[![Twitter Follow](https://img.shields.io/twitter/follow/sendgrid.svg?style=social&label=Follow)](https://twitter.com/sendgrid)
+[![GitHub contributors](https://img.shields.io/github/contributors/sendgrid/sendgrid-nodejs.svg)](https://github.com/sendgrid/sendgrid-nodejs/graphs/contributors)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./license)
 
 This site is based on Octopress, which in turn is based on Jekyll, with a dash of Twitter Bootstrap added.