Markdig prototype

- Issue MatterHackers/MCCentral#3660
Add Markdown implementation for help guides

Utilities/MarkdigAgg/AggQuoteBlockRenderer.cs

@@ -0,0 +1,25 @@
+// Copyright (c) 2016-2017 Nicolas Musset. All rights reserved.
+// This file is licensed under the MIT license.
+// See the LICENSE.md file in the project root for more information.
+
+using Markdig.Syntax;
+using MatterHackers.Agg.UI;
+
+namespace Markdig.Renderers.Agg
+{
+	public class QuoteBlockX : AutoFit{ }
+
+	public class AggQuoteBlockRenderer : AggObjectRenderer<QuoteBlock>
+    {
+        /// <inheritdoc/>
+        protected override void Write(AggRenderer renderer, QuoteBlock obj)
+        {
+           // var section = new Section();
+
+			renderer.Push(new QuoteBlockX()); // section);
+            renderer.WriteChildren(obj);
+            //section.SetResourceReference(FrameworkContentElement.StyleProperty, Styles.QuoteBlockStyleKey);
+            renderer.Pop();
+        }
+    }
+}