SSPickerView

简单对uipickerview封装，方便使用，也方便拓展

[SSPickerView pickerViewWithTitle:@"hello" contentes:@[@[@"1",@"2"],@[@"3",@"4"]] Finish:^(NSString *text, NSString *selectIndex, SSPickerView *pickerView) { self.showLabel.text = text; }];