Merge pull request #70 from paulfred/master

remove another reference to AddressService
Merge pull request #71 from paulfred/master

Some more eye candy
updated to id services, added campaign model
Merge pull request #73 from ninjascience/service_updates

updated to id services, added campaign model
implement a "where are they spending their money" visualization directive

Based the pie chart code off of http://jsfiddle.net/ragingsquirrel3/qkHK6/

Some possible improvements could be to create better tooltips, show the
labels for the bar chart, and add a legend for the pie chart.