scorpiona c-sharp

I thought it would be inappropriate to break the tradition set in the name of the challenge by using an "o" where something else would do. So, here's a C# solution that contains no `o` in string/character representation.

I came up with the idea for using interning, and the dirty work for how to interact with it through COM was provided by [this SO answer](http://stackoverflow.com/questions/22172175/read-the-content-of-the-string-intern-pool) and @bblanchon's [implementation](https://github.com/bblanchon/CsharpLeetSpeak).