taxonomy: prepare for publication

We're going to release the initial paper soon:
Passive Taxonomy of Wifi Clients using MLME Frame Contents

+ Remove chipset identification. At this point we don't expect
  it to be useful.

  Instead, use the first field to provide a Genus label for
  a device. If "iPad Air 2" is the species, "iPad" would be the
  genus.

+ Remove the (few) laptop signatures. This acknowledges reality: this
  mechanism is far better at identifying fixed configuration devices
  where the Wifi hardware is an integral part of the device, like
  it is with mobile devices. In laptops and desktops where Wifi is
  provided by a separate card, the mechanism mostly identifies the
  card (and that isn't very useful).

  For example, we haven't been able to add more Macbook models because
  the same signature identifies iMacs, PowerMacs, and every other
  device using the same Airport card.

+ Globally correct spelling of Visio to Vizio.
+ Rename pcap files to comply with new naming convention.

Change-Id: I6712706f6c76f0e38ae5602ec213154aae2496a4
34 files changed