Added support for running C# code in a dotnet core environment

environments/dotnet/Program.cs

@@ -0,0 +1,30 @@
+using System.IO;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Nancy.Owin;
+
+namespace Fission.DotNetCore
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            var host = new WebHostBuilder()
+               .UseContentRoot(Directory.GetCurrentDirectory())
+               .UseKestrel()
+               .UseUrls("http://*:8888")
+               .UseStartup<Startup>()
+               .Build();
+            host.Run();
+        }
+
+
+    }
+    public class Startup
+    {
+        public void Configure(IApplicationBuilder app)
+        {
+            app.UseOwin(x => x.UseNancy());
+        }
+    }
+}