Release notes and handbook changes for identifying wireless adapters

[Warren Block]

On Mon, 1 Aug 2016, Shawn Webb wrote:

> The discussion on this is too late for code changes to 11.0-RELEASE, but this should be documented loud and clear.

The difficulty here is that now we have to document different methods 
for different versions, which makes it harder for new users *and* the 
people trying to document it.  Too bad net.wlan.devices doesn't exist on 
10.X.  Maybe it could.