Support C# code.
I misunderstood what cpp was. If the C PreProcessor is good enough for C, C++ and Java, it's good enough for C#.
Update the comment that was just copy-pasted from java-code. We ignore namespace declarations and imports because they over-report company and package names: there's no way to strip out the uninteresting prefix from the interesting suffix.
Clearly, too much copy & paste.
Merge pull request #14 from frankshearar/csharp-support

C# support