VKBarChartView是一个可拖拽自定义 UIView 柱状图表，包含动画效果。

How it works

1. Create UIView in your storyboard/xib
2. Change Class to VKBarChartView
3. Create IBOutlet
4. Pass bar titles, colors(optional) and values to the the VKBarChartView using the

   - (void)createBarsWithTitles:(NSArray *)titles withBarsColors:(NSArray *)colors withBarsValues:(NSArray *)values;

项目主页：http://www.open-open.com/lib/view/home/1420525787937