ptwobrussell/Mining-the-Social-Web-2nd-Edition — pull request #246 by gwulfs (2014-12-16 05:56:12+00:00)
Title: fix import centroid error

http://python-cluster.readthedocs.org/en/latest/apidoc/cluster.util.html

when importing centroid, must use: from cluster.util import centroid
versus: from cluster import centroid