A program that maps train systems. It allows trains system operators to add and update information, and train riders to get information out.
DONE As a train system operator, I want to add train stations, so that I can show where all of the trains will go.
DONE As a train system operator, I want to add train lines, so that I can track which lines go to which stations.
DONE As a train rider, I want to view a train line, so that I can see the stations where it stops.
DONE As a train rider, I want to view a train station, so that I can see which trains come to it.