chore(@angular): Bump @angular version to rc4

Update @angular to rc4
Remove `MockLocationStrategy` references and usages from `sign-in.component.spec.ts`, `sign-up.component.spec.ts` and `app.component.spec.ts`

Author: roalcantara

package.json

@@ -22,13 +22,13 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/common": "2.0.0-rc.3",
-    "@angular/compiler": "2.0.0-rc.3",
-    "@angular/core": "2.0.0-rc.3",
+    "@angular/common": "2.0.0-rc.4",
+    "@angular/compiler": "2.0.0-rc.4",
+    "@angular/core": "2.0.0-rc.4",
     "@angular/forms": "^0.2.0",
-    "@angular/http": "^2.0.0-rc.3",
-    "@angular/platform-browser": "2.0.0-rc.3",
-    "@angular/platform-browser-dynamic": "2.0.0-rc.3",
+    "@angular/http": "^2.0.0-rc.4",
+    "@angular/platform-browser": "2.0.0-rc.4",
+    "@angular/platform-browser-dynamic": "2.0.0-rc.4",
     "@angular/router": "3.0.0-alpha.7",
     "@angular2-material/button": "^2.0.0-alpha.6",
     "@angular2-material/card": "^2.0.0-alpha.6",

src/app/+sign-in/sign-in.component.spec.ts

@@ -9,7 +9,6 @@ import {
 
 import { ActivatedRoute, DefaultUrlSerializer, Router, RouterConfig, RouterOutletMap, UrlSerializer } from '@angular/router';
 import { Location, LocationStrategy } from '@angular/common';
-import { MockLocationStrategy } from '@angular/common/testing/mock_location_strategy';
 import { SpyLocation } from '@angular/common/testing';
 
 import { By } from '@angular/platform-browser';
@@ -32,7 +31,6 @@ describe('Component: SignIn', () => {
       RouterOutletMap,
       {provide: UrlSerializer, useClass: DefaultUrlSerializer},
       {provide: Location, useClass: SpyLocation},
-      {provide: LocationStrategy, useClass: MockLocationStrategy},
       {
         provide: Router,
         useFactory: (resolver: ComponentResolver, urlSerializer: UrlSerializer, outletMap: RouterOutletMap, location: Location, injector: Injector) => {

src/app/+sign-up/sign-up.component.spec.ts

@@ -4,14 +4,12 @@ import {
   describe,
   expect,
   it,
-  inject,
-  injectAsync,
+  inject
 } from '@angular/core/testing';
 
 import { ActivatedRoute, DefaultUrlSerializer, Router, RouterConfig, RouterOutletMap, UrlSerializer } from '@angular/router';
 import { Location, LocationStrategy } from '@angular/common';
 import { Observable } from 'rxjs/Observable';
-import { MockLocationStrategy } from '@angular/common/testing/mock_location_strategy';
 import { SpyLocation } from '@angular/common/testing';
 
 import { By } from '@angular/platform-browser';
@@ -51,7 +49,6 @@ describe('Component: SignUp', () => {
       RouterOutletMap,
       {provide: UrlSerializer, useClass: DefaultUrlSerializer},
       {provide: Location, useClass: SpyLocation},
-      {provide: LocationStrategy, useClass: MockLocationStrategy},
       {
         provide: Router,
         useFactory: (resolver: ComponentResolver, urlSerializer: UrlSerializer, outletMap: RouterOutletMap, location: Location, injector: Injector) => {

src/app/app.component.spec.ts

@@ -9,7 +9,6 @@ import {
 import { ActivatedRoute, DefaultUrlSerializer, Router, RouterConfig, RouterOutletMap, UrlSerializer } from '@angular/router';
 import { Location, LocationStrategy } from '@angular/common';
 import { Observable } from 'rxjs/Observable';
-import { MockLocationStrategy } from '@angular/common/testing/mock_location_strategy';
 import { SpyLocation } from '@angular/common/testing';
 
 import { Component, provide, ComponentResolver, Injector } from '@angular/core';
@@ -30,7 +29,6 @@ beforeEachProviders(() => {
      RouterOutletMap,
       {provide: UrlSerializer, useClass: DefaultUrlSerializer},
       {provide: Location, useClass: SpyLocation},
-      {provide: LocationStrategy, useClass: MockLocationStrategy},
       {
         provide: Router,
         useFactory: (resolver: ComponentResolver, urlSerializer: UrlSerializer, outletMap: RouterOutletMap, location: Location, injector: Injector) => {