ENH: Upload test results to AppVeyor.
ENH: Upload test results to AppVeyor.

This should allow us to actually see the results in the web ui, rather
than having to look at the log.

dopplershift/MetPy,ShawnMurd/MetPy,Unidata/MetPy,ahaberlie/MetPy,jrleeman/MetPy,dopplershift/MetPy,ahaberlie/MetPy,Unidata/MetPy,jrleeman/MetPy,ahill818/MetPy