Add upgrade dialog

Wox/WoxUpdate.xaml.cs

@@ -0,0 +1,34 @@
+using System.Windows;
+using MarkdownSharp;
+using Wox.Core.i18n;
+using Wox.Core.Updater;
+
+namespace Wox
+{
+    public partial class WoxUpdate : Window
+    {
+        public WoxUpdate()
+        {
+            InitializeComponent();
+
+            string newVersionAvailable = string.Format(
+                InternationalizationManager.Instance.GetTranslation("update_wox_update_new_version_available"),
+                UpdaterManager.Instance.NewRelease);
+            tbNewVersionAvailable.Text = newVersionAvailable;
+            Markdown markdown = new Markdown();
+            wbDetails.NavigateToString(markdown.Transform(UpdaterManager.Instance.NewRelease.description));
+            lbUpdatedFiles.ItemsSource = UpdaterManager.Instance.GetAvailableUpdateFiles();
+        }
+
+        private void btnUpdate_Click(object sender, RoutedEventArgs e)
+        {
+            UpdaterManager.Instance.ApplyUpdates();
+        }
+
+        private void btnCancel_Click(object sender, RoutedEventArgs e)
+        {
+            UpdaterManager.Instance.CleanUp();
+            Close();
+        }
+    }
+}