Added support for default configurations, enabling a full site export.

The command "export file" with no arguments will export everything.

src/Orchard.Web/Modules/Orchard.Modules/Recipes/Builders/FeatureStep.cs

@@ -58,6 +58,11 @@ namespace Orchard.Modules.Recipes.Builders {
             ExportDisabledFeatures = context.ConfigurationElement.Attr<bool>("ExportDisabledFeatures");
         }
 
+        public override void ConfigureDefault() {
+            ExportEnabledFeatures = true;
+            ExportDisabledFeatures = false;
+        }
+
         public override void Build(BuildContext context) {
             if (!ExportEnabledFeatures && !ExportDisabledFeatures)
                 return;