Support for full .NET Framework

[Łukasz Pyrzyk]

https://github.com/warden-stack/Warden/blob/master/src/Warden/project.json

"frameworks": {
    "net461": {}, 
    "netstandard1.6": {
      "imports": [
        "dotnet5.6",
        "dnxcore50"
      ],
      "dependencies": {
        "Microsoft.CSharp": "4.0.1",
        "System.Collections": "4.0.11",
        "System.Linq": "4.1.0",
        "System.Runtime": "4.1.0",
        "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
        "System.Runtime.InteropServices.RuntimeInformation": "4.0.0",
        "System.Threading": "4.0.11",
        "System.Console": "4.0.0",
        "System.Diagnostics.Process": "4.1.0"
      }
    }
  },