v6.0.0

New major update 🎉

• #171 Updated react-native-modal to support RN 0.56+ (by @thatjuan)
• #167 Include locale DatePickerIOS prop type definition (by @kurniaeliazar)
• #156 Add instructions for iOS's 24h (by @RocKhalil)
• #151 Add minute interval to documentation (by @abarisic86)
• #153 Fixed syntax error in example (by @madc)