chore(webpack): update webpack config for webpack2
chore(webpack): update webpack config for webpack2

juanfc/angular-calendar,SamindaK/angular-calendar,SamindaK/angular-calendar,SamindaK/angular-calendar,mattlewis92/angular2-calendar,mattlewis92/angular-calendar,mattlewis92/angular2-calendar,mattlewis92/angular-calendar,mattlewis92/angular-calendar,mattlewis92/angular-calendar,juanfc/angular-calendar,juanfc/angular-calendar,juanfc/angular-calendar,mattlewis92/angular2-calendar