Add IOS privacy settings

[VitoItalianGamer]

Please add IOS privacy settings because I'm getting an iPhone soon.

[StellarSand]

I don't own any Apple devices. It's already mentioned in the Contributing section. Maybe you (or someone else with an Apple device) can open a pull request.

[VitoItalianGamer]

Well ok I guess

[StellarSand]

You can use this guide by EFF for now.