gstatic.com is too fast for some people.

Apparently you *can* get there in less than 5ms.  Change the code to only
consider it a "botch" if apenwarr.ca is really fast, but not if gstatic.com
is really fast.
Merge branch 'master' of gh:apenwarr/blip

* 'master' of gh:apenwarr/blip:
  Added a QR code for gfblip