fix(tslint): solved two problems with tslint

Author: Ismaestro

src/app/heroes/hero-search/hero-search.component.ts

@@ -17,6 +17,7 @@ export class HeroSearchComponent {
   heroes: Array<Hero> = [];
   heroFormControl: FormControl;
   filteredHeroes: any;
+  heroesAutocomplete: any;
 
   constructor(private heroService: HeroService) {
     this.heroFormControl = new FormControl();

src/polyfills.ts

@@ -29,4 +29,4 @@ import 'rxjs/add/operator/switchMap';
 import 'rxjs/add/operator/toPromise';
 import 'rxjs/add/operator/startWith';
 
-import 'hammerjs';
+import 'hammerjs';