#198 Machine Data Demo - Dynamic Dimensions. Squashed commit of the following:

commit 1ce56b484d965e7069c74f4f99162c7d902d768b
Author: nickholub <nikholub@gmail.com>
Date:   Thu Oct 24 14:07:10 2013 -0700

    fix #198 Machine Data Demo - Dynamic Dimensions

commit a4b4c982c1247379ae09b6b51af0a6bc85cdae34
Author: nickholub <nikholub@gmail.com>
Date:   Thu Oct 24 12:59:27 2013 -0700

    fix #198 Machine Data Demo - Dynamic Dimensions