IntelliSense for Data Binding not working

I opened your GitHub project in Visual Studio 2013 and I got the same behavior; no IntelliSense for bindings.

The design data is the key to the binding resolution which is failing, so I recommend this:

1. Add your project namespace to your Window element: xmlns:local="clr-namespace:IntelliSenseForDataBinding" which can help resolve the location of VM.
2. Change your d:DataContext to use the local namespace instead of d:Type, essentially providing the location of the type you're trying to use: d:DataContext="{d:DesignInstance local:MainViewModel, IsDesignTimeCreatable=True}"
3. Clean, Build, and Test

Proof:

I know I am late, but Kcvin's answer really helped me a lot and I would like to add that some classes can also use DataType that helps IntelliSense do its magic.

example:

<DataTemplate x:Key="ItemTemplate" DataType="entities:Item">
        <Grid Height="60">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            <TextBlock
                Grid.Column="0"
                Text="&#xE12B;"
                Style="{StaticResource MediumIconStyle}"
                Margin="{StaticResource XSmallLeftMargin}"
                AutomationProperties.Name="List item icon" />
            <StackPanel
                Grid.Column="1"
                Margin="{StaticResource SmallLeftMargin}"
                VerticalAlignment="Center">
                <TextBlock Style="{StaticResource ListTitleStyle}" Text="{Binding Name}" />
                <TextBlock Style="{StaticResource ListSubTitleStyle}" Text="{Binding Description}" />
            </StackPanel>
        </Grid>
    </DataTemplate>

I hope this helps someone in the future.