Fix issue 99 - Missing iOS 9 openURL method

[garrefa]

As described in issue 99

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[garrefa]

Sorry, actually that is not the last iOS9 method. The change log confused me. The actual method is the right one.

[nlutsenko]

Yup, looks like the method is correct.
I double checked it when doing Swift 3 migration to match the signature of the method in UIApplicationDelegate.