Replaced all copyright symbols with (c) to improve cross-platform
reading
Added classes to XFX::Audio namespace
Added and updated classes in XFX::Graphics namespace
Updated event function signature
Replaced const char* ToString() with const String& ToString()
Now, the only thing keeping XFX from a full compile is my stupid attempt at Asynchronous IO. Will look at that, but most likely, I will comment it out and just get a new Demo out before New Year.