kevinzhow/PNChart — pull request #28 by Lewuathe (2014-01-13 11:00:57+00:00)
Title: Continuous updating of PNCircleChart

In order to update one PNCircleChart which is made previously,
gradeLabel has to be private property of PNCircleChart.
Bacause I don't want previous gradeLabel to be kept on the UIView for the above purpose,
I wrote this patch. Please consider this specification.