Minor sample changes

Author: kwalrath

public/docs/_examples/user-input/dart/lib/app_component.dart

@@ -1,11 +1,9 @@
 // #docregion
-library user_input.app_component;
-
 import 'package:angular2/angular2.dart';
 import 'package:user_input/click_me_component.dart';
 import 'package:user_input/click_me_component_2.dart';
 import 'package:user_input/loop_back_component.dart';
-import 'package:user_input/key_up_components.dart';
+import 'package:user_input/keyup_components.dart';
 import 'package:user_input/little_tour_component.dart';
 
 @Component(

public/docs/_examples/user-input/dart/lib/click_me_component.dart

@@ -1,12 +1,13 @@
 // #docregion
-library user_input.click_me_component;
-
 import 'package:angular2/angular2.dart';
 
 // #docregion click-me-component
 @Component(
     selector: 'click-me',
-    template: '''<button (click)="onClickMe()">Click me!</button>
+    template: '''
+    // #docregion click-me-button
+    <button (click)="onClickMe()">Click me!</button>
+    // #enddocregion click-me-button
     {{clickMessage}}''')
 class ClickMeComponent {
   String clickMessage = '';

public/docs/_examples/user-input/dart/lib/click_me_component_2.dart

@@ -1,6 +1,4 @@
 // #docregion
-library user_input.click_me_component_2;
-
 import 'package:angular2/angular2.dart';
 
 @Component(

public/docs/_examples/user-input/dart/lib/key_up_components.dart renamed to public/docs/_examples/user-input/dart/lib/keyup_components.dart

@@ -1,7 +1,5 @@
 // #docplaster
 // #docregion
-library user_input.key_up_components;
-
 import 'dart:html';
 
 import 'package:angular2/angular2.dart';

public/docs/_examples/user-input/dart/lib/little_tour_component.dart

@@ -1,6 +1,4 @@
 // #docregion
-library user_input.little_tour_component;
-
 import 'package:angular2/angular2.dart';
 
 // #docregion little-tour

public/docs/_examples/user-input/dart/lib/loop_back_component.dart

@@ -1,6 +1,4 @@
 // #docregion
-library user_input.loop_back_component;
-
 import 'package:angular2/angular2.dart';
 
 // #docregion loop-back-component