bdp now supports 'verbose'

[eddelbuettel]

I whipped this together in five minutes in response to #148 and it turns out we don't need it. Still useful though:

R> bdp("EJ421905 Corp", "BID_YIELD", verbose=TRUE)
ReferenceDataResponse = {
    securityData[] = {
        securityData = {
            security = "EJ421905 Corp"
            eidData[] = {
            }
            fieldExceptions[] = {
            }
            sequenceNumber = 0
            fieldData = {
                BID_YIELD = -0.021369
            }
        }
    }
}
              BID_YIELD
EJ421905 Corp -0.021369
R>