Important C# Plugin Development Guide

I was doing a plugin and everything went well with the project in Visual Studio 2015, but now I do not know how to copy (save) to a .dll file
 
I was doing a plugin and everything went well with the project in Visual Studio 2015, but now I do not know how to copy (save) to a .dll file
You need compile the project
 
Hey guys. In the new fougerite 1.5.5 does not come the UnityEngine.dll. What should I do in this case ?? :(
 
To create a rustbuster server need the C# Plugin Development??