.net core 1.0.0 with entity framework core sqlite

I am trying to create a .net core application that has a connection to a sqlite database.

I have .net core sdk 1.0 installed and have added the following Nuget-packages to my project:

• Microsoft.EntityFrameworkCore.Sqlite
• Microsoft.EntityFrameworkCore.Sqlite.Design

I am using the following project.json file:

{
  "version": "1.0.0-*",
  "buildOptions": {
    "emitEntryPoint": true
  },

  "dependencies": {
    "Microsoft.EntityFrameworkCore.Sqlite": "1.0.0",
    "Microsoft.EntityFrameworkCore.Sqlite.Design": "1.0.0",
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
  },

  "tools": {
    "Microsoft.EntityFrameworkCore.Tools": 
       {
      "version": "1.0.0-final",
      "imports": [ 
        "portable-net45+win8+dnxcore50",
        "portable-net45+win8"
      ]
    }
  },

  "frameworks": {
    "netcoreapp1.0": {
      "imports": "dnxcore50"
    }
  }
}

Then I ran the following command:

dotnet restore

Now I want to check if the ef tool has been successfully installed to create a migration. But when I run:

dotnet ef --help

I get the following result:

The specified framework 'Microsoft.NETCore.App', version '1.0.0-rc2-3002702' was not found.
  - Check application dependencies and target a framework version installed at:
      C:\Program Files\dotnet\shared\Microsoft.NETCore.App
  - The following versions are installed:
      1.0.0
  - Alternatively, install the framework version '1.0.0-rc2-3002702'.

Is it possible to installe release candidate 2 together with the 1.0 version and do I really have to do this to get entity framework runnging with .net core 1.0?