Update Readme.md

Author: kamilmysliwiec

Readme.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <a href="http://nestjs.com/" target="blank"><img src="http://kamilmysliwiec.com/public/nest-logo.png" alt="Nest Logo" /></a>
+  <a href="http://nestjs.com/" target="blank"><img src="http://kamilmysliwiec.com/public/nest-logos.png" alt="Nest Logo" /></a>
 </p>
 
 [travis-image]: https://api.travis-ci.org/nestjs/nest.svg?branch=master