Add .NET support
Update error output for python and dotnet scripts, and update makefile to require dotnet framework 3.5
fixes #631 - better .bind() polyfill
Merge pull request #604 from hexid/dotNET

ref #596 : .NET Launcher
Update dotNET app to use slimerjs.bat on Windows machines
Merge pull request #635 from hexid/dotNET

Update dotNET app to use slimerjs.bat on Windows machines