yavsc/omnisharp.json

{
    "dotnet": {
    "projects": "src/*/project.json;test/*/project.json;scripts/*/project.json",
      "enable": true,
        "projects": ".",
        "enablePackageRestore": false,
        "script": {
          "enableScriptNuGetReferences": true,
          "defaultTargetFramework": "dnx451"
        }

    }
}