Scheduler do not load initial events

[JacobSiegle]

Previously using primeNG 1.1.4, FullCalendar 3.1.0, JQuery 3.1.1.
Upgraded using primeNG 2.0.0-rc.1, FullCalendar 3.1.0, JQuery 3.1.1.

I see in parent 7ae654b commit 4bed540 that this snippet of code is removed in the options.

events: (start, end, timezone, callback) => {
         callback(this.events);
},

Adding this back in causes events to show again on the schedule.

[wonbyte]

This is still an issue with RC-2

[wonbyte]

@JacobSiegle Can you make a PR to fix?