First pass at modal dialog

Aurora/Design/Components/Dialogs/Modal.xaml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ContentView
+     xmlns="http://xamarin.com/schemas/2014/forms"
+     xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+     x:Class="Aurora.Design.Components.Dialogs.Modal"
+     BackgroundColor="Blue">
+    <ContentView.Content>
+        <ContentPresenter
+             x:Name="ViewContent"/>
+    </ContentView.Content>
+</ContentView>

Aurora/Design/Components/Dialogs/Modal.xaml.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using Xamarin.Forms;
+
+namespace Aurora.Design.Components.Dialogs
+{
+    public partial class Modal : ContentView
+    {
+        public Modal()
+        {
+            InitializeComponent();
+        }
+    }
+}