-import {Injectable} from 'angular2/core';
-import {Http, Response, Headers, RequestOptions} from 'angular2/http';
-import {Observable} from 'rxjs/Rx';
+import { Injectable } from 'angular2/core';
+import { Http, Response } from 'angular2/http';
+import { Observable } from 'rxjs/Rx';
@Injectable()
export class FriendsService {