Update readme

README.md

@@ -1,5 +1,22 @@
 cerebro-docker
 --------------
 
-cerebro-docker contains the official docker files for [cerebro](https://github.com/lmenezes/cerebro) 
+[![Docker Pulls](https://img.shields.io/docker/pulls/lmenezes/cerebro.svg)](https://hub.docker.com/r/lmenezes/cerebro)
 
+
+cerebro-docker contains the official docker files for [cerebro](https://github.com/lmenezes/cerebro) project.
+Images are periodically uploaded in [lmenezes/cerebro](https://hub.docker.com/r/lmenezes/cerebro/) docker hub repo.
+
+### Usage
+
+For using latest cerebro execute:
+
+```
+docker run -p 9000:9000 lmenezes/cerebro
+```
+
+For using a specific version run:
+
+```
+docker run -p 9000:9000 lmenezes/cerebro:0.8.1
+```