chore(package): update webpack to version 2.2.1
chore(package): update webpack to version 2.2.1

https://greenkeeper.io/
pSuwalski/angular-google-maps,caravancoop/angular2-google-maps,SebastianM/angular2-google-maps,SebastianM/angular2-google-maps,SebastianM/angular-google-maps,tobper/angular2-google-maps,SebastianM/angular2-google-maps,caravancoop/angular2-google-maps,pSuwalski/angular-google-maps,tobper/angular2-google-maps,pSuwalski/angular-google-maps,caravancoop/angular2-google-maps,tobper/angular2-google-maps,SebastianM/angular-google-maps