onChange should conform to existing form events.

### I'm Submitting a ...

```
[x] Bug report
[ ] Feature request
[ ] Support request
```

### Steps to Reproduce
`` returns souly a moment object which can not be handled by existing form onChange handlers

### Expected Results
onChange should return the normal form event WITH a moment parameter and the value set to the formatted Date time based on the dateFormat and timeFormat props. This will allow for existing code to work without specific changes to handle this special case. Events bubbling up are supposed to be enriched, or acted on and not replaced.

### Actual Results
onChange returns an unformatted moment object making the dev to format the DateTime upto 2 time in their code, once in the the element another time in the onChange event.

_Edit 7/08/2017:_ Enhanced the report with formatting petpeev