Protect iOS7 specific methods
Protect iOS7 specific methods

senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,jlukanta/mixpanel-iphone,senselabs/mixpanel-iphone,senselabs/mixpanel-iphone,jlukanta/mixpanel-iphone,senselabs/mixpanel-iphone,jlukanta/mixpanel-iphone