View would pop back when using mdc_swipe.

I was having an issue with the view popping back when using mdc_swipe. It was not moving far enough for some reason and the mdc_directionOfExceededThreshold call would return MDCSwipeDirectionNone. I just increased the threshold used to move the view inside the mdc_swipe call.

Signed-off-by: Chris Pomerantz <chris@fluiddataconcepts.com>