Move image to the top of Kanban and Scrum CC article (#576)
Move image to the top of Kanban and Scrum CC article (#576)

This image now takes up the page width as shown on the preview site.  Moving
this to the top with a little caption seems like a good thing to do.  Should
entice readers to go and download the book and read it hopefully.

betterscientificsoftware/betterscientificsoftware.github.io