updating WebHDFS::Client.Create method to take IO stream as data (payload)

current webhdfs client needs payload to be sent in http to be in memory, and does not allow any way to set IO stream so that it can read in chunks and writes to TCPscoket directly. This update provides a way to provide File handle (IO) as payload that will get recognize automatically and will stream the payload in chunks so that it does not need to have entire file in memory.