I want to use a simple (POCO only without other dependencies) PCL with targets
I believe this is related to: https://github.com/aspnet/Home/issues/1356
It might be best to follow up on this issue tracker and ask for the current status although it says it will be supported in RC2.
This is part of the whole .NET platform standardization via the netstandard
(https://github.com/dotnet/corefx/blob/master/Documentation/architecture/net-platform-standard.md)
You can read more about this here:
http://damien.dennehy.me/blog/2016/01/15/class-library-packages-future-class-libraries/
Note: There's a doc I found today regarding targeting a PCL:
http://dotnet.github.io/docs/core-concepts/libraries/libraries-with-cli.html#how-to-target-a-portable-class-library-pcl