Merge pull request #53 from ZhangHang/master

Simple Pie chart for PNChart
Fix pie chart style
Fix readme
Update README.md
Fix color
Fix Color
Remove color
[Mod] : Add Coodinate Axis to PNLineChart
Merge pull request #54 from jackyzonewen/master

[Mod] : Add Coodinate Axis to PNLineChart
Made counting label publicly accessible. Adding ability to grow circle.
Merge pull request #55 from kyleclegg/master

Made counting label publicly accessible. Adding ability to grow circle.
Added yLabelFormat property to define the y axis label formatting.
Merge pull request #56 from nmdias/master

Added yLabelFormat property to define the y axis label formatting.
add highlight on bar animation #58
get rid of the warning when analysing it

PNPieChart.m:137:33: warning: Passed-by-value struct argument contains
uninitialized data (e.g., via the field chain: 'origin.x')
Merge pull request #60 from congbo/master

get rid of the warning when analysing it
NSString -> NSNumber
Merge pull request #61 from cleexiang/master

NSString -> NSNumber
PNLineChart's inflexion Point support two sharp, such as cycle, square
make line more smooth, refactor code