Sigint fix windows

This fix handles the problem about the SIGINT signal that is not known
in Windows because this is a signal specific for Linux. This can be
fixed by changing the signal to 'exit'. (I have also reverted the commit about the configuration file here)

By my opinion, it is best that you make an extra branch for Windows because it is specific for Windows. I think this fix will create a problem in Linux. (but I'm not sure)