Solves error building SPA on linux host due to case error

Author: eiximenis

src/Web/WebSPA/Client/modules/app.module.ts

@@ -2,7 +2,7 @@ import { NgModule, NgModuleFactoryLoader }       from '@angular/core';
 import { BrowserModule  } from '@angular/platform-browser';
 // import { FormsModule } from '@angular/forms';
 import { HttpModule } from '@angular/http';
-import { RouterModule } from '@angular/Router';
+import { RouterModule } from '@angular/router';
 
 import { routing }        from './app.routes';
 import { AppService } from './app.service';