Made the default number of instances in a facet 0.
Made the default number of instances in a facet 0.

infochimps-labs/ironfan,infochimps-labs/ironfan,infochimps-labs/ironfan,infochimps-away/cluster_chef,infochimps-away/cluster_chef,infochimps-away/cluster_chef,infochimps-away/cluster_chef