Updated README with diagrams
Updated README with diagrams

* Domain data
* Service diagram
sensaid/spring-cloud-microservice-example,dcbdmb/spring-cloud-microservice-example,cerdmann-pivotal/spring-cloud-microservice-example,goushijie/spring-cloud-microservice-example,lokinell/spring-cloud-microservice-example,jamesmarva/spring-cloud-microservice-example,lrolaz/spring-cloud-microservice-example,280455936/spring-cloud-microservice-example,mackstone/spring-cloud-microservice-example,steven-sheehy/spring-cloud-microservice-example,linux-china/spring-cloud-microservice-example,starlight36/spring-cloud-microservice-example,lewis-ing/spring-cloud-microservice-example