Add check box in Demo project

Author: ColinFarL

DiffPlex.Wpf.Demo/MainWindow.xaml

@@ -20,6 +20,7 @@
             <Button Width="20" Height="20" x:Name="FutherActionsButton" Content="…" Click="FutherActionsButton_Click" BorderBrush="{x:Null}" BorderThickness="0" Margin="0,0,31,0" />
             <CheckBox Width="120" Height="20" VerticalContentAlignment="Center" IsChecked="{Binding IsSideBySide, ElementName=DiffView}" Content="Is_SideBySide" Foreground="{Binding Foreground, ElementName=DiffView}" />
             <CheckBox Height="20" VerticalContentAlignment="Center" x:Name="IgnoreUnchangedCheckBox" IsChecked="{Binding IgnoreUnchanged, ElementName=DiffView}" Content="IgnoreUnchanged" Margin="0,0,24,0" Foreground="{Binding Foreground, ElementName=DiffView}" />
+            <CheckBox Height="20" VerticalContentAlignment="Center" x:Name="HideLineNumbersCheckBox" IsChecked="{Binding HideLineNumbers, ElementName=DiffView}" Content="HideLineNumbers" Margin="0,0,24,0" Foreground="{Binding Foreground, ElementName=DiffView}" />
             <Label Height="20" VerticalContentAlignment="Center" Padding="0,0,8,0" x:Name="MarginLineCountLabel" Target="{Binding ElementName=MarginLineCount}" Foreground="{Binding Foreground, ElementName=DiffView}">LinesContext</Label>
             <TextBox Width="100" Height="20" VerticalContentAlignment="Center" x:Name="MarginLineCount" Padding="8,0,8,0" Text="{Binding LinesContext, ElementName=DiffView, UpdateSourceTrigger=PropertyChanged}" Foreground="{Binding Foreground, ElementName=DiffView}" Background="{x:Null}" Margin="0,0,32,0" />
             <Button Width="100" Height="20" x:Name="WindowButton" Content="Test window" Click="WindowButton_Click" BorderBrush="{x:Null}" BorderThickness="0" Margin="16,0,1,0" />