Add note on using curl to test /encrypt and /decrypt
Add note on using curl to test /encrypt and /decrypt

Fixes gh-246

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