readme is updated

Author: dhewzulla

README.md

@@ -26,5 +26,9 @@ The value of the ```apikey``` parameter is used to control which device applicat
 ```
 nodejs  server.js
 ```
-Alternative, you can build a docker image, or download and run from [docker hub](https://cloud.docker.com/u/dilshat/repository/docker/dilshat/global_input_node). You may place a [the Nginx load balancer](https://cloud.docker.com/repository/docker/dilshat/global_input_nginx) in front to manage multiple instances.  
+Alternative, you can build a docker image using the script the repository or download from the [docker hub](https://cloud.docker.com/u/dilshat/repository/docker/dilshat/global_input_node). You may place a [a Nginx load balancer](https://cloud.docker.com/repository/docker/dilshat/global_input_nginx) in front of a set of WebSocket instances to achieve the scalability.
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