Project: springxd
Issue XD-410: Update Processors Filter & JSon Filed Value Filter section to use Shell commands instead of curl 
See http://static.springsource.org/spring-xd/docs/1.0.0.M1/reference/html/#filter http://static.springsource.org/spring-xd/docs/1.0.0.M1/reference/html/#json-value-filter
Story points: 1