fix #56, handle transform parameters properly--I was wrongly trustin the contract proposed by ServerTransform to extend RequestParameters; I'll later fix ServerTransform

Author: sammefford

src/main/java/com/marklogic/client/impl/DocumentManagerImpl.java

@@ -347,7 +347,7 @@ public DocumentPage read(ServerTransform transform, Transaction transaction,
             responseFormat,
             mergeTransformParameters(
                     (transform != null) ? transform : getReadTransform(),
-                    extraParams
+                    null
             ),
             withContent,
             uris);