kevinzhow

Update readme version

... ... @@ -24,7 +24,7 @@ You will need LLVM 3.0 or later in order to build PNChart.
[CocoaPods](http://cocoapods.org) is the recommended way to add PNChart to your project.
1. Add a pod entry for PNChart to your Podfile `pod 'PNChart', '~> 0.2.2'`
1. Add a pod entry for PNChart to your Podfile `pod 'PNChart', '~> 0.3.1'`
2. Install the pod(s) by running `pod install`.
3. Include PNChart wherever you need it with `#import "PNChart.h"`.
... ...