Missing include in main.cpp about maratis HOT 4 CLOSED

<windows.h> should not be included there
code need to be cross-platform.

But if the include is needed for compilation on windows,
there might be a problem somewhere else.

Should we modify MUtils.h this way:

// sleep
#ifdef WIN32
    #include <process.h>
    #include <windows.h>       *** MODIF ***
    #define SLEEP(t) Sleep(t);
#else
    #include <unistd.h>
    #define SLEEP(t) usleep(t*1000);
#endif

actually the good include seems to be <WinBase.h> for previous windows 8
and <Synchapi.h> for windows 8

http://msdn.microsoft.com/en-us/library/windows/desktop/ms686298(v=vs.85).aspx

In fact it seems that WinBase.h & Synchapi.h are children of windows.h
If you look at the examples, they all use windows.h as header, a more generic 
header.