I understand that, but it is important to do for a simple reason. When someone sees the ship and wants to change it, retexture it, or even find more ships by the that person the readme is usually the only thing they have to go on half the time. Lots of ppl get ships from friends in the form of blind links, from mods, or from conversions in other games with out the readme there is no way to trace it back or to find the author etc.
Also what happens a year down the road, it couls be the only sorce left.