Add MD5 to PutOjbectResult
issue 56: include cause exception in the chain
that is very valuable when troubleshooting SSL problem
Merge pull request #57 from stevenzwu/master

issue 56: include cause exception in the chain that is very valuable when troubleshooting SSL problem
Merge pull request #27 from sndyuk/add_md5_putObjectResult

Add MD5 to PutOjbectResult