return new Promise(resolve => {

  this.dataProvider.getProducts().subscribe((products) => {
    this.start;
    this.products = products;
    this.AKey = products.pop().$key;

    console.log(products);
    for(let person of products) {
      this.people.push(person);
    }

    resolve(true);

  });

});

doInfinite(infiniteScroll:any) {
 console.log('doInfinite, start is currently '+this.start);
 this.start+=50;

 this.loadPeople().then(()=>{
   infiniteScroll.complete();
 });