Updated ClusterWS icon in Readme

Author: egorov-accedo

docs/README.md

@@ -2,7 +2,7 @@
 <h6 align="center">Build Scalable Node.js WebSocket Applications</h6>
 
 <p align="center">
- <img src="https://cdn.rawgit.com/goriunov/159120ca6a883d8d4e75543ec395d361/raw/f4c3c36ac1ab75beedcf73312272b60dac33ecfa/clusterws.svg" width="500">
+ <img src="https://cdn.rawgit.com/goriunov/159120ca6a883d8d4e75543ec395d361/raw/c7d5366740902a118bd857b70117a2df6ca97dd0/clusterws.svg" width="450">
 </p>
 
 <p align="center">