Add support for C++

[BartVandewoestyne]

I tested this extension as it looked quite neat, but unfortunately after installing and while trying it out, I got the message that C++ was not supported. It would be nice if it was.

[Skyppid]

Hi @BartVandewoestyne, thanks for the feedback. I currently don't have the capacity to implement such a feature (especially since I am not a C++ developer and can't really test this feature by myself).

But feel free (or anyone else) to contribute via Pull Request!