We must always create own UIWindowLevelAlert window, because existing may be used by other instance or different UIViewController
Merge pull request #40 from Ganster41/master

We must always create own UIWindowLevelAlert window, because existing may be used by other instance or different UIViewController
Merge updates from upstream repository

Merge commit '6fc534ffe023ed8f62b8f14234cd5d6cc66aeac5'

Conflicts:
	Classes/PXAlertView.m