convert AWS's CopyObjectResult to a map.
Merge pull request #31 from sw1nn/copy-object-result-mappable

Convert AWS's CopyObjectResult to a map
Released 0.3.6
Added put-multipart-object for uploading large files
Merge pull request #35 from mtbkapp/master

Multipart file upload
configure client's max connections
Merge pull request #37 from strongh/max-connections

Configure client's max connections
Some minor formatting changes
Released 0.3.7