PyMC 2.0 not supported

[ryanherring]

Some simple things appear to not work with PyMC 2.0. Should probably list PyMC 2.2 explicitly as the supported version. An example of something you can't do with PyMC 2.0 is:

p = pymc.Poisson('test', 5)
s = p + 1

This will complain about not being able to add a Poisson and an int:

TypeError: unsupported operand type(s) for +: 'Poisson' and 'int'

[CamDavidsonPilon]

Ok, thanks for letting me know. I'll update the docs to reflect PyMC 2.2