Add some more docs on embedded config server
Add some more docs on embedded config server

Fixes gh-280

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