#262 added working eureka sample (#333)

samples/OcelotEureka/DownstreamService/Controllers/CategoryController.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Mvc;
+
+namespace DownstreamService.Controllers
+{
+    [Route("api/[controller]")]
+    public class CategoryController : Controller
+    {
+        // GET api/values
+        [HttpGet]
+        public IEnumerable<string> Get()
+        {
+            return new[] { "category1", "category2" };
+        }
+    }
+}