Fixed URLs for underlying libraries...
forked from mbostock's block: Cellular automata
Modified http://polymaps.org/polymaps.min.js?2.5.1 to a secure url
Modified http://polymaps.org/ex/procedural.js?2.0.2 to a secure url
https://polymaps.org/polymaps.min.js?2.5.1
https://polymaps.org/ex/procedural.js?2.0.2