public static Builder newBuilder(String clientName) {
            Builder builder = new Builder();
            builder.config = ClientConfigFactory.findDefaultConfigFactory().newConfig();
            builder.config.loadProperties(clientName);
            return builder;
        }
Create a builder with properties for the specific client loaded. The default 
{@link IClientConfig} implementation loads properties from <a href="https://github.com/Netflix/archaius">Archaius</a>

@param clientName Name of client. clientName.ribbon will be used as a prefix to find corresponding properties from
     <a href="https://github.com/Netflix/archaius">Archaius</a>
ribbon-core/src/main/java/com/netflix/client/config/IClientConfig.java