title: Share code between multiple .NET Core projects
body: <p>I would like to know how I can share c# source codes between two (or more) .NET Core projects (commandline projects!).</p>
  
  <p>As far as I understand, I can not link to source files in different directories in xproj/project.json based projects. I noticed that it now seems to be recommended to create nuget packages for everything. But is it really necessary for me to setup a private repository and create a nuget package only to be able to share some common source units?</p>
  
  <p>VS2015 contains a template for .NET Core library which may be suitable for building a shared lib. Is it possible to link this lib to a project without a nuget package?</p>