feat(app): add JSDoc comments
feat(app): add JSDoc comments

compodoc/compodoc-demo-todomvc-angular2,compodoc/compodoc-demo-todomvc-angular,compodoc/compodoc-demo-todomvc-angular2,compodoc/compodoc-demo-todomvc-angular,compodoc/compodoc-demo-todomvc-angular2