chore(package): update typings to version 1.2.0
chore(package): update typings to version 1.2.0

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