Added a deserializer to BoundHostVolumes (#43)

While using docker-java with docker client API v1.11, I was getting errors about processing the Volumes item in the container config.  I added a deserializer to BoundHostVolumes that will simply ignore the contents and allow the parser to continue with the rest of the stream.

My original attempt was to parse the object, but since I was unfamiliar with the schema and also unfamiliar with the JsonParser. I have left that attempt in the comments for anyone who would like to pursue it further.