Multiple Column selection similar to rows

[adityatoshniwal]

@amanmahajan7 @nstepien I have requirement where I need to select the columns (can be multiple) and copy them. So that, they can be pasted in an spreadsheet. Slickgrid has the feature but its not in React - http://jsfiddle.net/veerrituja/q3mjz6gx/
Will it be accepted if I raise a PR for this ? I need to know before I start working on it.

[adityatoshniwal]

Discussion here - #2820