Fix readme

Merge pull request kevinzhow#51 from rochefort/modern-syntax

Convert to modern Objective-C syntax

Fix repo

Add podfile

Move files

Update readme multiable line example

Merge pull request kevinzhow#11 from bradleylin/master

Fix missing UICountingLabel when using CocoaPods

Circle Chart response to the View Height

Add document for Circle Chart

Fix Line Chart x labels position and size