Initial stream support

lib/syntax.dart

Index: lib/syntax.dart
diff --git a/lib/syntax.dart b/lib/syntax.dart
index e055371f0e758abcd574979bce9c5b4e583c2914..0a96a1ff9eeb97f00fad87e19348f2b77606ea31 100644
--- a/lib/syntax.dart
+++ b/lib/syntax.dart
@@ -4,10 +4,12 @@
 
 library fancy_syntax;
 
+import 'dart:async';
 import 'dart:html';
 import 'dart:collection';
 import 'package:mdv_observe/mdv_observe.dart';
 
+import 'async.dart';
 import 'eval.dart';
 import 'expression.dart';
 import 'parser.dart';
@@ -22,13 +24,10 @@ class FancySyntax extends CustomBindingSyntax {
 
   _Binding getBinding(model, String path, name, node) {
     if (path != null) {
-      if (path.isEmpty) {
-        // avoid creating an unneccesary scope for the top-level template
-        return null;
-      } else if (model is! Scope) {
+      var expr = new Parser(path).parse();
+      if (model is! Scope) {
         model = new Scope(model: model, variables: globals);
       }
-      var expr = new Parser(path).parse();
       return new _Binding(expr, model);
     } else {
       return null;