Let me take another look at this - I seemed to have problems getting the proper error message display oringally.

We probably have to re-visit the the whole messaging thing at some point anyway, e.g. define the difference between actual error and expected behavior (== nice-looking message). E.g. I don't like to see:

````
spring> richgauge display werwer
13/10/31 10:47:52 WARN client.RestTemplate: GET request for "http://localhost:9393/metrics/richgauges/werwer" resulted in 404 (Not Found); invoking error handler

Command failed org.springframework.xd.rest.client.impl.SpringXDException: There is no rich gauge named 'werwer'
````