[MSVC] #include "napa.h" cannot surpress warning C4100

[fs-eire]

header file napa/module.h uses #pragma to disable warning C4100 when including v8.h.

napa.h contains napa/module.h, however it fails to disable that warning because v8.h is included before napa/module.h

Current workaround:

#include "napa.h"
// this produces the warning

change to

#include "napa/module.h"
#include "napa.h"
// no warning now.