Add basic Xamarin.iOS support

csharp/Facebook.Yoga/ios/Facebook.Yoga.iOS.Test/ViewController.designer.cs

@@ -0,0 +1,17 @@
+//
+// This file has been generated automatically by MonoDevelop to store outlets and
+// actions made in the Xcode designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+
+namespace Facebook.Yoga.iOS.Test
+{
+    [Register("ViewController")]
+    partial class ViewController
+    {
+        void ReleaseDesignerOutlets()
+        {
+        }
+    }
+}