Pie chart data/labels/links should all be specified in one list of objects

[bbarry]

Currently you need to specify the pie chart data, labels and links in 3 separate lists. If you specify links you need to also sort the first two links before you pass them in or the links may not match the chart section you planned them to.

I've fixed this and a few other things in a fiddle here: http://jsfiddle.net/pJjQm/10/ but I don't feel like cleaning it up and making it a pull request right now. The changes in that fiddle do consist of breaking API changes.