Fix signal issue on windows
Fix signal issue on windows

raybuhr/grab,istinspring/grab,huiyi1990/grab,shaunstanislaus/grab,SpaceAppsXploration/grab,pombredanne/grab-1,codevlabs/grab,huiyi1990/grab,giserh/grab,lorien/grab,shaunstanislaus/grab,subeax/grab,alihalabyah/grab,maurobaraldi/grab,istinspring/grab,liorvh/grab,DDShadoww/grab,SpaceAppsXploration/grab,DDShadoww/grab,alihalabyah/grab,pombredanne/grab-1,liorvh/grab,subeax/grab,giserh/grab,kevinlondon/grab,codevlabs/grab,subeax/grab,kevinlondon/grab,maurobaraldi/grab,lorien/grab,raybuhr/grab