added docs, and sample library

SampleLibrary/Utils.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SampleLibrary
+{
+  public static class Utils
+  {
+    /// <summary>
+    /// Utility method to get models from local folder rather than an absolute path
+    /// </summary>
+    /// <param name="filename"></param>
+    /// <returns></returns>
+    public static string GetTestModel(string filename)
+    {
+      var path = Path.Combine(Directory.GetCurrentDirectory(), "..", "..", "TestModels", filename);
+      return path;
+
+    }
+  }
+}