Wizer and Emscripten

Hi all,

Not sure whether Wizer is supposed to work with Emscripten. I tried compiling the following c++ code with emcc
```
#include
#include
#include

WIZER_DEFAULT_INIT();

EMSCRIPTEN_KEEPALIVE int SayHello() {
std::cout << "Hello World!";
return 0;
}
```
I got some compiling errors.