Use the UIView drawViewHierarchyInRect method instead of the layer's renderInContext method to avoid a bug found while using FXBlurView in iOS 8: https://github.com/nicklockwood/FXBlurView/issues/79  Note this change works well for iOS 7 and later, but most likely won't be pulled in to the master FXBlurView branch because it doesn't work as well on versions earlier than iOS 7.
Merge branch 'master' of https://github.com/Clinkle/FXBlurView into clinkle_podspec