upgrade a few more package.json files to get webpack working
upgrade a few more package.json files to get webpack working

ng-book/angular2-rxjs-chat,ahmadassaf/Angular-RxJS-Chat,ng-book/angular2-rxjs-chat,ahmadassaf/Angular-RxJS-Chat,ahmadassaf/Angular-RxJS-Chat,ng-book/angular2-rxjs-chat,ng-book/angular2-rxjs-chat