chore(package): update lockfile
chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

willsoto/angular2-chartist,willsoto/ng-chartist,willsoto/ng-chartist,paradox41/angular2-chartist,willsoto/angular2-chartist,paradox41/angular2-chartist,paradox41/angular2-chartist,willsoto/ng-chartist,willsoto/angular2-chartist