title: React-Bootstrap add aria-label to SafeAnchor
body: <p>React-ally warns me that I need to add an aria-label to SafeAnchor, which is a child of NavItem in React-Bootstrap and is the element that triggers the warning. I only called NavItem in my code, but is there a way that I can add the aria-label to SafeAnchor so that I can get rid of this warning? Thanks.</p>