auth.service.ts

import { Injectable } from '@angular/core';
import {Http, Headers} from '@angular/http';
import 'rxjs/add/operator/map';




@Injectable()
export class AuthService {
  authToken: any;
  user: any;

  constructor(private http: Http) { }

  // function to register user
  registerUser(user){
  let headers = new Headers();
  headers.append('Content-Type', 'application/json');

  return this.http.post('http://localhost:9090/users/register', user, {headers: headers}).map(res => res.json());

}

}