Callbacks as promises instead

[jturmel]

Would be nice if the callbacks could return a promise instead.

[awerlang]

+1

uploader.uploadAll().then(() => mySvc.save(this.record));

[simpixelated]

+1

[sryzycki]

+1

[hfar]

+1

[nervgh]

I plan use $http in next version 🐎

[kunal999]

+1

[jimenefe]

This would be very useful, specially if migrating to $http too. Please! :)