WYPopupWindow

仿安卓popupWindow，显示popupWindow中不影响页面上的其他任何交互，支持扩展添加任何视图

接入说明：

pod WYPopupWindow 或 导入WYPopupWindow.(h,m)

使用说明：

/****** 传入popupWindow要放到的父视图 及popupWindow的坐标（调起关键方法） ******/
[[WYPopupWindow shareInstance] showPopWindowInView:parentView showAtLocation:CGRectMake(x, y, width, height)];

// 记录展开视图的点击视图，用来解决重复点击该视图的问题
[WYPopupWindow shareInstance].touchUpView = touchView;
// 动画展开的起始点，默认是中心
[WYPopupWindow shareInstance].animationAnchorPoint = CGPointMake(animationAnchorPointX, animationAnchorPointY);
// popupWindow的背景颜色，默认是透明的
[WYPopupWindow shareInstance].windowBackgoundColor = RandomColor;
// 动画持续时间，默认0.2
[WYPopupWindow shareInstance].animationDuration = 0.5;
// 是否能响应内部点击事件，默认支持
[WYPopupWindow shareInstance].touchable = YES;
// 是否能响应外部点击事件，默认支持
[WYPopupWindow shareInstance].outsideTouchable = YES;
// 是否显示阴影，默认显示
[WYPopupWindow shareInstance].isShowShadow = YES;
// 阴影颜色，默认显示grayColor
[WYPopupWindow shareInstance].shadowColor = [UIColor redColor];
// 圆角弧度，默认4
[WYPopupWindow shareInstance].cornerRadius = 10;
// popupWindow蒙版颜色，默认是透明的
[WYPopupWindow shareInstance].maskColor = [UIColor colorWithWhite:0 alpha:0.1];
// 关闭popupWindow
// [[WYPopupWindow shareInstance] closePopupWindow];

/****** popupWindow上可以添加任何视图 ******/
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, width, height)];
label.text = [dataArray() objectAtIndex:touchView.tag];
label.textAlignment = NSTextAlignmentCenter;
[[WYPopupWindow shareInstance] addCustomView:label];