Clarify how to get encrypted properies to clients
Clarify how to get encrypted properies to clients

Fixes gh-349

marbon87/spring-cloud-config,shakuzen/spring-cloud-config,spring-cloud/spring-cloud-config,shakuzen/spring-cloud-config,marbon87/spring-cloud-config,spring-cloud/spring-cloud-config,spring-cloud/spring-cloud-config,royclarkson/spring-cloud-config,royclarkson/spring-cloud-config,shakuzen/spring-cloud-config,marbon87/spring-cloud-config,royclarkson/spring-cloud-config