Upgrade to Spring Vault 1.0 M2.
Upgrade to Spring Vault 1.0 M2.

Closes gh-70.

spencergibb/spring-cloud-vault-config,mp911de/spring-cloud-vault-config,spring-cloud-incubator/spring-cloud-vault-config,rhoegg/spring-cloud-vault-config,mp911de/spring-cloud-vault-config,spring-cloud-incubator/spring-cloud-vault-config,spencergibb/spring-cloud-vault-config,rhoegg/spring-cloud-vault-config