Kourtney Kardashian is supporting her man at the rock show! Kardashian took to Instagram Saturday to share some BTS snaps from her husband, Travis Barker's performance with Machine Gun Kelly during a tour stop in Indianapolis, Indiana.Captioning the photo slideshow, «tour wife,» Kardashian shared some loved-up pics kissing Barker backstage, walking hand-in-hand ahead of his performance and a clip of the former Blink-182 drummer doing his thing.Barker commented on the post, writing, «Tour life’s better with you