Add mirrors inherited member test

test/mustache_test.dart

diff --git a/test/mustache_test.dart b/test/mustache_test.dart
index a7142e3..404ae40 100644
--- a/test/mustache_test.dart
+++ b/test/mustache_test.dart
@@ -660,6 +660,12 @@
         .renderString(new Foo()..lambda = (_) => 'yo');
       expect(output, equals('_yo_'));
     });
+    
+    test('Simple field inherited', () {
+      var output = parse('_{{bar}}_')
+        .renderString(new Boo()..bar = 'bob');
+      expect(output, equals('_bob_'));
+    });
   });
 
   group('Delimiters', () {
@@ -700,3 +706,6 @@
   String bar;
   Function lambda;
 }
+
+class Boo extends Foo {  
+}