Updated README

README.md

 # Distributed version of the Spring PetClinic Sample Application built with Spring Cloud [![Build Status](https://travis-ci.org/spring-petclinic/spring-petclinic-microservices.svg?branch=master)](https://travis-ci.org/spring-petclinic/spring-petclinic-microservices/)
 
 ## Starting services locally
-Every microservice is a Spring Boot application and can be started locally using IDE or `mvn spring-boot:run` command. Please note that supporting services (Config and Discovery Server) must be started before any other application (Clients, Vets, Visits and API).
+Every microservice is a Spring Boot application and can be started locally using IDE or `mvn spring-boot:run` command. Please note that supporting services (Config and Discovery Server) must be started before any other application (Customers, Vets, Visits and API).
 If everything goes well, you can access the following services at given location:
 * Discovery Server - http://localhost:8761
 * Config Server - http://localhost:8888
 * AngularJS frontend (API Gateway) - http://localhost:8080
-* Clients, Vets and Visits Services - random port, check Eureka Dashboard 
+* Customers, Vets and Visits Services - random port, check Eureka Dashboard 
 
 ## Understanding the Spring Petclinic application with a few diagrams
 <a href="https://speakerdeck.com/michaelisvy/spring-petclinic-sample-application">See the presentation here</a>