NAME:
plotRotcurve
PURPOSE:
plot the rotation curve for this potential (in the z=0 plane for non-spherical potentials)
INPUT:
Rrange - range
grid= number of points to plot
savefilename=- save to or restore from this savefile (pickle)
+bovy_plot(*args,**kwargs)
OUTPUT:
plot to output device
HISTORY:
2010-07-10 - Written - Bovy (NYU)