Updated the readme regarding the newer visual studio versions and the 'VC runtime dependency hell'
Updated the readme regarding the newer visual studio versions and the 'VC runtime dependency hell'

mrjimenez/pupnp,BelledonneCommunications/libupnp,BelledonneCommunications/libupnp,mrjimenez/pupnp,commshare/pupnp,commshare/pupnp,mrjimenez/pupnp,BelledonneCommunications/libupnp,mrjimenez/pupnp,commshare/pupnp,BelledonneCommunications/libupnp