Updated rate service WSDL from v8 to v16, removed default setting of RequestedShipment.RateRequestTypes (no longer in WSDL), added better error messages for WSDL validation errors by passing suds' WebFault to SchemaValidationError
Updated rate_request and freight_rate_request examples for WSDL v16 compatibility, removed extraneous whitespace
Merge pull request #33 from foxxyz/master

Updated RateRequest WSDL from v8 to v16