Allow for copy/paste of multiple rows+columns

I'd like to see essentially the exact same thing as this person is requesting here: https://github.com/adazzle/react-data-grid/issues/86

I'd like to be able copy & paste a range of rows and columns, similar to what you can do in Excel at the moment.

this could be copying between cell ranges on the same grid, between two separate grid instances, or from somewhere off-grid (e.g. Excel).

https://cloud.githubusercontent.com/assets/2393035/10424809/3fc45d68-70ca-11e5-907a-38d63878d50a.gif

Would this be possible to do with this component? If so it would be awesome!

Thanks!