GUAAlertView消息提醒组件

GUAAlertView 是一个自定义的消息提醒组件，支持手势操作和基于 Block 的 API。

示例代码：

GUAAlertView *v = [GUAAlertView alertViewWithTitle:@"title"
                                           message:@"message"
                                       buttonTitle:@"buttonTitle"
                               buttonTouchedAction:^{
                                       NSLog(@"button touched");
                                   } dismissAction:^{
                                       NSLog(@"dismiss");
                                   }];

[v show];