presentModalViewController deprecated in ios6

在ios6 中presentModalViewController 方法已经不使用了，所以出现warning

product ->Build For -> Profiling 编译出现大量的warning。

presentModalViewController:animated: is deprecated :first deprecated in iOS6.0 。

[self presentModalViewController:pNewController animated:YES];

替换为

[self presentViewController:pNewController animated:YES completion:nil];

相对应的

dismissModalViewControllerAnimated :animated: is deprecated :first deprecated in iOS6.0

[self dismissModalViewControllerAnimated:YES];

替换为

[self dismissViewControllerAnimated:YES completion:nil];