project.json

{
    "dependencies": {
        "Microsoft.VisualStudio.Editor": "15.0.25604-Preview4",
        "Microsoft.VisualStudio.ImageCatalog": "15.0.25604-Preview4",
        "Microsoft.VisualStudio.Shell.15.0": "15.0.25604-Preview4"
    },
    "frameworks": {
        "net46": { }
    }
}