BooleanFamily supports y/n syntax

src/FubuCore.Testing/Binding/BooleanFamilyTester.cs

@@ -74,6 +74,24 @@ public void treats_on_string_as_true()
             WithValue("ON").ShouldBeTrue();
         }
 
+        [Test]
+        public void treats_no_string_as_false()
+        {
+            WithValue("no").ShouldBeFalse();
+            WithValue("NO").ShouldBeFalse();
+            WithValue("n").ShouldBeFalse();
+            WithValue("N").ShouldBeFalse();
+        }
+
+        [Test]
+        public void treats_yes_string_as_true()
+        {
+            WithValue("yes").ShouldBeTrue();
+            WithValue("YES").ShouldBeTrue();
+            WithValue("y").ShouldBeTrue();
+            WithValue("Y").ShouldBeTrue();
+        }
+
         [Test]
         public void treats_empty_string_as_false()
         {

src/FubuCore/Binding/BooleanFamily.cs

@@ -1,5 +1,7 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
+using System.Linq;
 using System.Reflection;
 
 namespace FubuCore.Binding
@@ -8,6 +10,7 @@ namespace FubuCore.Binding
     public class BooleanFamily : StatelessConverter
     {
         private static TypeConverter _converter = TypeDescriptor.GetConverter(typeof(bool));
+        private static IList<string> _aliases = new List<string> { "yes", "y" };
         public const string CheckboxOn = "on";
 
         public override bool Matches(PropertyInfo property)
@@ -25,6 +28,7 @@ public override object Convert(IPropertyContext context)
 
             return valueString.Contains(context.Property.Name)
             || valueString.EqualsIgnoreCase(CheckboxOn)
+            || _aliases.Any(x => x.Equals(valueString, StringComparison.OrdinalIgnoreCase))
             || (bool)_converter.ConvertFrom(rawValue);
         }
     }