Use express's functionality for serving static files to create virtual paths that our application can understand. These virtual paths ae now '/public' and '/controllers', which will be routed to the correct physical directory.
Use express's functionality for serving static files to create virtual
paths that our application can understand. These virtual paths ae now
'/public' and '/controllers', which will be routed to the correct
physical directory.

StevenXL/freecodecamp,StevenXL/freecodecamp