Move refernce to firebase.d.ts to angularfire.d.ts

firebase/angularfire.d.ts

@@ -1,4 +1,6 @@
-export declare class AngularFire {
+/// <reference path='firebase.d.ts'/>
+
+export declare class AngularFire {
     asArray(): FirebaseArray;
 }
 

todo.ts

@@ -1,5 +1,3 @@
-/// <reference path='firebase/firebase.d.ts'/>
-
 import {Component, Template} from 'annotations';
 import {bootstrap, Foreach} from 'angular2/angular2';
 import {bind} from 'angular2/di';