Get the installed font for an iOS application. This helps instantiating a new UIFont by name since the name is sometimes not apparent. Note: be sure to add the font to Info.plist first.

InstalledFonts.swift

// THANKS: http://codewithchris.com/common-mistakes-with-adding-custom-fonts-to-your-ios-app/
for family: String in UIFont.familyNames {
    print("\(family)")
    for names: String in UIFont.fontNames(forFamilyName: family) {
        print("== \(names)")
    }
}