added an example to plot a meteogram
added an example to plot a meteogram

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