Fix Promise polyfill breaking Angular 2 sites using Zone.js

[jasonpang]

http://stackoverflow.com/questions/41220741/onesignal-with-angular-2#comment69640366_41220741

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[jasonpang]

Fixed by: d790181

Tested on BrowserStack IE 11 and Edge 14.

[nasr18]

hey @jasonpang how did u fix this? I wanna handle events in anuglar way. When i declare OneSignal inside app.component.ts its not working. and also no error in console.