Merge pull request #1 from scommisso/master

update to latest
restsharp 105 & target framework 4.5.1 & Warnings as errors
UploadRequest.AllBytesWritten flag fix & BinaryContent prevent external stream dispose
Merge pull request #12 from cspwizard/master

restsharp 105 & .Net 4.5.1 & some fixes and improvements