Update to work with new version of github.com/kolo/xmlrpc
Merge pull request #2 from softlayer/update-1

Update to work with new version of github.com/kolo/xmlrpc
Misc Changes

Removes reflection code. (Yay for deleating code)
Simplifies error handling for RpcCall
Removes json tags on types
Adds APIResult and removes Struct
Simplifies SessionCall logic a tiny bit
Fixes error
Readme.md: fix go syntax