Keep track of runtime when faking data

[ingenthr]

As a way to show how quickly data is loaded, fake should take a timestamp before and after loading to print how long it took to load.

[daschl]

Wouldn't this make sense on our doc * methods instead? since this is where it "terminates" of sort, and then all the other single or bulk load operations would benefit from that

[ingenthr]

Yes, that's approximately what I meant. At least with a batch.

[ingenthr]

Idea too, curses output with how many done and how many ops/s.