Update README.md - moved logo on top and added more badges

Author: myzeprog

README.md

@@ -1,4 +1,10 @@
+![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
+
 [![BuildStatus](https://travis-ci.org/sendgrid/smtpapi-nodejs.png?branch=master)](https://travis-ci.org/sendgrid/smtpapi-nodejs)
+[![Email Notifications Badge](https://dx.sendgrid.com/badge/nodejs)](https://dx.sendgrid.com/newsletter/nodejs)
+[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE.txt)
+[![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/smtpapi-nodejs.svg)](https://github.com/sendgrid/smtpapi-nodejs/graphs/contributors)
 
 **This node module allows you to quickly and more easily generate SendGrid X-SMTPAPI headers.**
 
@@ -84,4 +90,5 @@ smtpapi-nodejs is guided and supported by the SendGrid [Developer Experience Tea
 
 smtpapi-nodejs is maintained and funded by SendGrid, Inc. The names and logos for smtpapi-nodejs are trademarks of SendGrid, Inc.
 
-![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
+# License
+[The MIT License (MIT)](LICENSE.txt)