boxPlot transitions with tickFormat

@jrideout Here is the rework with the jasmine test for tickFormat. The tests for the boxplot calculations pass, but the tests that deal with the rendering are failing. I think it is because the boxplot isn't fully rendered before the test is run. I added a pie chart to the box-plot.html to demonstrate transitions. It seems to work in the example and in my project. If anyone can shed any light on the testing issue that would be great.

Thanks
nd