To install the handle you simply loop around the frame and over the button knots. Now you can carry your bike with paracord style.
I saw this idea by Walnut Studiolo on Kickstarter. The version I created is made from paracord and aluminum bar. It attaches by loops and Chinese button knots. Below you'll find a video on how to do that knot.
Step 1: Shape the bar
To get a proper curve for the handle I bent 1/2" X 1/8" aluminum bar over a paint can. This curve was too round so I opened back up some.