tabbar中间添加plusbutton,在iOS10.3.1和iOS10.3.2上显示，barItem的位置有问题

[utopia2006]

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Base Info for this issue

1. Version：Latest Version as here
2. Language of App ：Objective-C/Swift
3. iOS System Version：iOS12
4. Prototype（是否是真机）：YES
5. Issue Type：Crash、Bug、Enhancement（希望能支持一个新需求）、Q-A

1. How to reproduce the problem.

2. Please help me in this way.

3. Here is a Demo.

4. Here is my Debug log

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[utopia2006]

CYLTabbarController.m中的：

- (void)viewDidLayoutSubviews {
   CGFloat deviceVersion = [[[UIDevice currentDevice] systemVersion] floatValue];
   if (deviceVersion >= 10 && deviceVersion < 10.2) {
       [self.tabBar layoutSubviews];//Fix issue #93
}

修改一下这个版本号判断，保证能调用[self.tabBar layoutSubViews] 就能解决这个问题了

[ChenYilong]

收到，我确认下

[ChenYilong]

v1.28.1：Fix issue #93 #392