Add example enable and disable wifi based on dockinstation status
This policy looks for connected docking station in lsusb output.
If the docking station is present, and wifi is enabled it disables wifi
via network manager. If the docking station is not present, and wifi is
disabled it enables wifi via network manager.
Merge pull request #237 from nickanderson/examples/dockingstation_enabledisable_wifi

Add example enable and disable wifi based on dockinstation status