style(dart): Format with dartfmt v0.2.0

Format all pure Dart code with package:dart_style v0.2.0

Command:
```
find -type f -name "*.dart" | xargs dartformat -w
```

modules/examples/src/jsonp/jsonp_comp.dart

@@ -5,7 +5,9 @@ import "package:angular2/http.dart" show Jsonp;
 import "package:angular2/src/facade/async.dart" show ObservableWrapper;
 
 @Component(selector: "jsonp-app")
-@View(directives: const [NgFor], template: '''
+@View(
+    directives: const [NgFor],
+    template: '''
     <h1>people</h1>
     <ul class="people">
       <li *ng-for="#person of people">

modules/examples/src/message_broker/background_index.dart

@@ -4,7 +4,8 @@ import "package:angular2/src/web-workers/worker/application.dart"
     show WorkerMessageBus, WorkerMessageBusSource, WorkerMessageBusSink;
 import "package:angular2/src/web-workers/worker/broker.dart"
     show MessageBroker, UiArguments;
-import "package:angular2/src/web-workers/shared/serializer.dart" show Serializer;
+import "package:angular2/src/web-workers/shared/serializer.dart"
+    show Serializer;
 
 import "dart:isolate";
 
@@ -18,7 +19,8 @@ main(List<String> args, SendPort replyTo) {
     }
   });
 
-  MessageBroker broker = new MessageBroker(bus, new Serializer(null, null, null), null);
+  MessageBroker broker =
+      new MessageBroker(bus, new Serializer(null, null, null), null);
   var args = new UiArguments("test", "tester");
   broker.runOnUiThread(args, String).then((data) {
     bus.sink.send({"type": "result", "value": data});

modules/examples/src/message_broker/index.dart

@@ -18,8 +18,7 @@ main() {
         querySelector("#echo_result")
             .appendHtml("<span class='response'>${data['value']}</span>");
       } else if (identical(data['type'], "test")) {
-        bus.sink.send(
-            {'type': "result", 'id': data['id'], 'value': VALUE});
+        bus.sink.send({'type': "result", 'id': data['id'], 'value': VALUE});
       } else if (identical(data['type'], "result")) {
         querySelector("#ui_result")
             .appendHtml("<span class='result'>${data['value']}</span>");