Update readme to use the new logo

README.md

@@ -1,8 +1,7 @@
-<p align="center">
+<p align=center>
   <a href="https://customer.io">
-    <img src="https://files.gitbook.com/v0/b/gitbook-28427.appspot.com/o/assets%2F-LSFjPaMQn1zKdYh6i89%2F-LU6OglGKqQfqMd5Zl-V%2F-LU6OzOLnOvy8VLwfgdg%2FLogo-Color-Horizontal.png?alt=media&token=add29dd0-cabb-4440-b46b-aed21350ae90" height="60">
+    <img src="https://avatars.githubusercontent.com/u/1152079?s=200&v=4" height="60">
   </a>
-  <p align="center">Power automated communication that people like to receive.</p>
 </p>
 
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-Ready--to--Code-blueviolet?logo=gitpod)](https://gitpod.io/#https://github.com/customerio/customerio-ruby/)