Add button to UI

Author: ScottIsAFool

LiveWriterPluginManager/Controls/CreatePackageControl.xaml

@@ -86,6 +86,9 @@
                 <Button Content="Edit metadata"
                         Margin="10,0,10,10"
                         Command="{Binding EditMetadataCommand}"/>
+                <Button Content="Open package"
+                        Margin="10,0,10,10"
+                        Command="{Binding OpenPackageCommand}"/>
             </StackPanel>
         </StackPanel>