CS0246 de erro do compilador (tipo ou namespace não encontrada) em usar Ninject em ASP.NET vNext

Eu quero usar Ninject em uma biblioteca de classes Asp.Net vNext. Mas eu fico Compiler CS0246 de erro ( O tipo ou nome do namespace 'Ninject' não pôde ser encontrado).

Aqui está o que eu fiz:

1) Criar um novo ASP.NET vNext Class Library

2) Editar project.json:

{         
    dependencies: {
        Ninject: 3.2.2.0
    },
    configurations : {
        net451 : { 
            dependencies: {
            }
        },
        k10 : { 
            dependencies: {
                System.Runtime: 4.0.20.0
            }
        }
    }
}

3) Verifique Package Manager Log:

Restoring packages for C:\Projects\ClassLib1\project.json
Attempting to resolve dependency ClassLib1 >= 1.0.0
Attempting to resolve dependency Ninject >= 3.2.2.0
  GET https://www.nuget.org/api/v2/FindPackagesById()?Id='Ninject'
Attempting to resolve dependency mscorlib >= 
Attempting to resolve dependency System >= 
Attempting to resolve dependency System.Core >= 
Attempting to resolve dependency Microsoft.CSharp >= 
Attempting to resolve dependency ClassLib1 >= 1.0.0
Attempting to resolve dependency Ninject >= 3.2.2.0
Attempting to resolve dependency System.Runtime >= 4.0.20.0
  OK https://www.nuget.org/api/v2/FindPackagesById()?Id='Ninject' 1250ms
  GET https://www.nuget.org/api/v2/FindPackagesById?id='Ninject'&$skiptoken='Ninject','3.0.2-unstable-9057'
  OK https://www.nuget.org/api/v2/FindPackagesById?id='Ninject'&$skiptoken='Ninject','3.0.2-unstable-9057' 179ms
  GET https://www.nuget.org/api/v2/package/Ninject/3.2.2
  OK https://www.nuget.org/api/v2/package/Ninject/3.2.2 949ms
Resolving complete, 2531ms elapsed
Installing Ninject 3.2.2.0
Restore complete, 2755ms elapsed

Parece bem ..

4) Editar Class1.cs:

using Ninject;

namespace ClassLib1
{
    public class Class1
    {
        public Class1()
        {
            var kernel = new StandardKernel();
        }
    }
}

Intellisense pode resolver as referências a Ninject.

5) Construir e eu tenho CS0246:

1>------ Build started: Project: ClassLib1, Configuration: Debug Any CPU ------
1>  Building ClassLib1 .NETFramework,Version=v4.5.1
1>  Building ClassLib1 K,Version=v1.0
1>C:\Projects\ClassLib1\Class1.cs(1,7): error CS0246: The type or namespace name 'Ninject' could not be found (are you missing a using directive or an assembly reference?)
1>C:\Projects\ClassLib1\Class1.cs(9,30): error CS0246: The type or namespace name 'StandardKernel' could not be found (are you missing a using directive or an assembly reference?)
1>  
1>  Build failed.
1>      0 Warnings(s)
1>      2 Error(s)

O que está errado?