having issues when I include sio.h

When I try to include sio.h in my object-c classes, I get all all sorts of errors.. such as:
../src/sio2/../bullet/btCollisionWorld.h:67: error: syntax error before 'btStackAlloc'

I assume it has something to do with how these include paths are worked out. I'm sure I'm doing something very noobish, but if someone could clue me in, it would be greatly appreciated. I'm assuming this is something that will pop out to someone as a simple mistake.. if you need more information, let me know.

I would suggest you to simply use the template app. Everything is already set and linked for you, so you can start building on top of it.

am using template app. But then for example.. I made a new class called 'Game' and tried to include sio.h but I get over 1k errors.

hmm.. ok I got it.. I need to use .mm instead of .m