cs2nim update

[kobi]

I updated the repository again, you can check out the tests/samples dir to see 
what currently works. sorry limited time (even to properly post new info here) 
right now, the code is still in flux, so no need for pull requests for now, but 
if you're interested you can take it for a spin, or post issues with 
unsupported small samples of working c# code and how it should look in Nim. 
please make it as minimal as possible. Thanks, kobi