Update README.md
Added Socket class (i.e. OO API) and NanomsgException for error reporting
Merge pull request #1 from mhowlett/master

Rebasing
Merge branch 'HEAD' of https://github.com/MasonOfWords/NNanomsg.git into prototype

Conflicts:
	NNanomsg/NNanomsg.csproj
Socket object exceptions and documentation