从Reachability分叉。添加获取移动网络类型（2G/3G/4G）、移动网络运营商（移动/联通/电信/铁通）的功能

 self.googleReach = [Reachability reachabilityWithHostname:@"www.google.com"];

    self.googleReach.reachableBlock = ^(Reachability * reachability)
    {
        NSString * temp = [NSString stringWithFormat:@"GOOGLE Block Says Reachable(%@)", reachability.currentReachabilityString];
        NSLog(@"%@", temp);

        // to update UI components from a block callback
        // you need to dipatch this to the main thread
        // this uses NSOperationQueue mainQueue
        [[NSOperationQueue mainQueue] addOperationWithBlock:^{
            weakself.blockLabel.text = temp;
            weakself.blockLabel.textColor = [UIColor blackColor];
        }];

        // 4G 3G 2G  WIFI
        NSLog(@"%@",[reachability distinguishReachable]);

        //Mobile Networks Operator
        NSLog(@"%@",[Reachability checkMobileOperators]);
    };