exportedAt property should be a DateTime value

[frankkilcommins]

Currently the property is set as follows:

ExportedAt = DateTime.UtcNow.ToLongTimeString();

Update to set output format to be UTC date + time.

[Yousef-Majidi]

Hi : )

I'd like to take care of this. Could you please assign it to me?

Thank you

[frankkilcommins]

Hi @Yousef-Majidi

Awesome, thanks for jumping on. I've updated the ReadMe with dev instructions and references our contributor guide, to hopefully make everything clear for you!