This is a plugin for the game Space Engineers, which adds random star system generation to worlds aswell as some other neat features. More info in the wiki
For installation instructions, please refer to the wiki here
Some people encounter an issue on startup, that the game crashes, when this plugin is loaded. A fix for that is to right click the .dll and go into properties, and there unblock it. The field for that is at the bottom of the properties window.
This is probably caused by a memory leak that is present in space engineers, where it does not clean up voxel storage, that was closed or deleted. It only happens, because the plugin uses a much higher density for asteroid rings and fields by default. However, you can set the density in the configuration or in the world settings of the plugin.
This readme only contains some information about the installation. The wiki contains more help and info. Wiki