iOS / PNChart

getAxisMinMax - Determine these values automagically

Update PNLineChart.m

PieChart divides equally when all value of data items are 0

Show actual percentage in label

The label was showing stuff like 6000% which is not relevant if it says the % or maybe %%%.

Anyway I feel this way it is better for a default use?

I found it very useful to have this... especially for testing if not for production purposes.

Will need in the .h:
- (NSArray*) getAxisMinMax:(NSArray*)xValues;

Add setAxisXLabel/setAxisYLabel

Small cleanup and increased version number of used CocoaPod module

Added a method to allow the update of both the current and the total for...

…e chart so it's display remains overall accurate.

- (void)updateChartByCurrent:(NSNumber *)current byTotal:(NSNumber *)total;

We have a scenario where our app is pulling updates to both the "checked in" (our current) and "registered and ready to check in" (our total). Since both values can be updated, the chart would not be correct if only the option for the total to be updated was not available.

Use duration property in counting label

Fix little issue in PNLineChart.m

the delegate(userClickedOnLinePoint: lineIndex:) in method(touchPoint:
withEvent:) is never called,because the point p1 is not in each line
path.So,when touch the line path,nothing happens(the delegate is
invalid).