update dummy module

src/angular/dummy.module.ts

@@ -1,11 +1,13 @@
 import { NgModule } from '@angular/core';
 
 import { InputVerbatimDirective } from './directives/input-verbatim.directive';
+import { TrueFalseValueDirective } from './directives/true-false-value.directive';
 
 @NgModule({
     imports: [],
     declarations: [
         InputVerbatimDirective,
+        TrueFalseValueDirective,
     ],
 })
 export class DummyModule {