Segmentation of multi-channel(>3) images

[Stefan van der Walt]

Hi Juan

On 2015-01-15 02:56:28, Juan Nunez-Iglesias <jni.soma at gmail.com> wrote:
> iirc SLIC was updated to work for any number of channels with
> `multichannel=True`! Looks like the docstring needs updating! Feel
> free to submit a PR but in the meantime, give it a shot! =)

This reminds me--I used SLIC recently to answer a StackOverflow
question, and noticed that not all the parameters are well described.
For example, what is SLIC-0?  Would you be willing to review that
docstring for us, especially given that we're using SLIC quite heavily
in our tutorials?

Thanks!
Stéfan