Merge pull request #26 from Josica/badges

Add/Update Badges on README.md

Author: Matt Bernier

README.md

@@ -1,4 +1,6 @@
-[![Travis Badge](https://travis-ci.org/sendgrid/ruby-http-client.svg?branch=master)](https://travis-ci.org/sendgrid/ruby-http-client)
+![SendGrid Logo](https://uiux.s3.amazonaws.com/2016-logos/email-logo%402x.png)
+
+[![BuildStatus](https://travis-ci.org/sendgrid/ruby-http-client.svg?branch=master)](https://travis-ci.org/sendgrid/ruby-http-client)[![Email Notifications Badge](https://dx.sendgrid.com/badge/ruby)](https://dx.sendgrid.com/newsletter/ruby)[![npm](https://img.shields.io/npm/l/express.svg)]()[![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/ruby-http-client.svg)](https://github.com/sendgrid/ruby-http-client/graphs/contributors)
 
 **Quickly and easily access any RESTful or RESTful-like API.**