README.md in smtpapi-0.1.4 vs README.md in smtpapi-0.1.5

@@ -8,15 +8,12 @@
 [![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-ruby.svg)](https://github.com/sendgrid/smtpapi-ruby/graphs/contributors)
 
 **This ruby gem allows you to quickly and more easily generate SendGrid X-SMTPAPI headers.**
 
-
 # Announcements
 
-**NEW:** If you're a software engineer who is passionate about #DeveloperExperience and/or #OpenSource, [this is an incredible opportunity to join our #DX team](https://sendgrid.com/careers/role/1421152/?gh_jid=1421152) as a Developer Experience Engineer and work with [@thinkingserious](https://github.com/thinkingserious) and [@aroach](https://github.com/aroach)! Tell your friends :)
-
 All updates to this library is documented in our [CHANGELOG](https://github.com/sendgrid/smtpapi-ruby/blob/master/CHANGELOG.md).
 
 # Table of Contents
 - [Installation](#installation)
 - [Quick Start](#quick-start)
@@ -29,10 +26,10 @@
 <a name="installation"></a>
 # Installation
 
 ## Prerequisites
 
-- Ruby version 2.2
+- Ruby version >= 2.4
 - The SendGrid service, starting at the [free level](https://sendgrid.com/free?source=smtpapi-ruby)
 
 ## Install Package
 
 Add this line to your application's Gemfile: