feat(forms): export validator directives as part of formDirectives

modules/angular2/src/forms/directives.ts

@@ -8,6 +8,7 @@ import {TemplateDrivenFormDirective} from './directives/template_driven_form_dir
 import {DefaultValueAccessor} from './directives/default_value_accessor';
 import {CheckboxControlValueAccessor} from './directives/checkbox_value_accessor';
 import {SelectControlValueAccessor} from './directives/select_control_value_accessor';
+import {RequiredValidatorDirective} from './validator_directives';
 
 export {ControlNameDirective} from './directives/control_name_directive';
 export {FormControlDirective} from './directives/form_control_directive';
@@ -20,6 +21,7 @@ export {ControlValueAccessor} from './directives/control_value_accessor';
 export {DefaultValueAccessor} from './directives/default_value_accessor';
 export {CheckboxControlValueAccessor} from './directives/checkbox_value_accessor';
 export {SelectControlValueAccessor} from './directives/select_control_value_accessor';
+export {RequiredValidatorDirective} from './validator_directives';
 
 /**
  *
@@ -40,5 +42,7 @@ export const formDirectives: List<Type> = CONST_EXPR([
 
   DefaultValueAccessor,
   CheckboxControlValueAccessor,
-  SelectControlValueAccessor
+  SelectControlValueAccessor,
+
+  RequiredValidatorDirective
 ]);

modules/angular2/test/forms/integration_spec.ts

@@ -24,7 +24,6 @@ import {NgIf} from 'angular2/directives';
 import {
   Control,
   ControlGroup,
-  RequiredValidatorDirective,
   TemplateDrivenFormDirective,
   formDirectives,
   Validators,
@@ -752,7 +751,7 @@ class WrappedValue implements ControlValueAccessor {
 }
 
 @Component({selector: "my-comp"})
-@View({directives: [formDirectives, WrappedValue, RequiredValidatorDirective, NgIf]})
+@View({directives: [formDirectives, WrappedValue, NgIf]})
 class MyComp {
   form: any;
   name: string;