message: fix(LoadingOverlay): include window service to loading overlay module
diff: import { NgModule } from '@angular/core';
  import { CommonModule } from '@angular/common';
  +import { TsWindowService } from './../services/window/window.service';
  import { TsLoadingOverlayComponent } from './loading-overlay.component';
  import { TsLoadingOverlayDirective } from './loading-overlay.directive';
  export { TsLoadingOverlayDirective } from './loading-overlay.directive';
  @@ -10,6 +11,9 @@ export { TsLoadingOverlayDirective } from './loading-overlay.directive';
  imports: [
  CommonModule,
  ],
  + providers: [
  + TsWindowService,
  + ],
  declarations: [
  TsLoadingOverlayDirective,
  TsLoadingOverlayComponent,
  