Follow up to 605da142a96b38fe03f05d8be32664419ba93880; I forgot to include the actual updated notebook.
Merge branch 'master' of github.com:astropy/astropy4scipy2014

Conflicts:
	notebooks/04_Handling_FITS_Files.ipynb
Updated FITS tutorial HTML again
Updated the bit.ly link to a 'friendlier' URL, which now points directly to https://github.com/astropy/astropy4scipy2014/archive/master.zip so now when users download the files they'll get the bleeding edge version before the tutorial (this was necessary regardless since the zip file Perry linked to was out of date)