Bumped to version 1.0.0-alpha.4
Bumped to version 1.0.0-alpha.4

benelliott/angular2-select,basvandenberg/ng-select,basvandenberg/ng-select,benelliott/angular2-select,basvandenberg/angular2-select,basvandenberg/angular2-select,benelliott/angular2-select,basvandenberg/ng-select,benelliott/angular2-select,basvandenberg/angular2-select,basvandenberg/ng-select