First attempt at using MiniConda for affiliated packages

Just to test if it's going to work nicely like the core package, or whether it will require more work (because of the astropy installation)
@astrofrog -- here you need to do a ``conda remove astropy`` before the ``pip install``. The issue is that anaconda comes with astropy stable, and doing a ``pip `install`` over the existing installation doesn't remove files that existed in 3.2 but do not exist in 0.4. I got bit by this in the upgrade from 0.2 to 0.3 on anaconda.