📝 add new props to README (#39)

Author: troberts-28

README.md

@@ -445,6 +445,9 @@ return (
 |            maximumHours             | The highest value on the hours picker                                     |                                                                                Number                                                                                 |    23    |  false   |
 |           maximumMinutes            | The highest value on the minutes picker                                   |                                                                                Number                                                                                 |    59    |  false   |
 |           maximumSeconds            | The highest value on the seconds picker                                   |                                                                                Number                                                                                 |    59    |  false   |
+|           hourInterval            | The interval between values on the hours picker                                   |                                                                                Number                                                                                 |    1    |  false   |
+|           minuteInterval            | The interval between values on the minutes picker                                   |                                                                                Number                                                                                 |    1    |  false   |
+|           secondInterval            | The interval between values on the seconds picker                                   |                                                                                Number                                                                                 |    1    |  false   |
 |            hourLabel             | Label for the hours picker                                                                                                                                                        |                                                                                  String \| React.ReactElement                                                                                   |               h                |  false   |
 |           minuteLabel            | Label for the minutes picker                                                                                                                                                      |                                                                                  String \| React.ReactElement                                                                                   |               m                |  false   |
 |           secondLabel            | Label for the seconds picker                                                                                                                                                      |                                                                                  String \| React.ReactElement                                                                                   |               s                |  false   |