Exports types useDateInput (#44)

* fix: add types support for useDateInput

* fix: move type inside module declaration

* fix: make onDateChange required

Author: iamjaredwalters

index.d.ts

@@ -96,4 +96,22 @@ declare module "react-nice-dates" {
   export function DateRangePickerCalendar(
     props: DateRangePickerCalendarProps
   ): JSX.Element;
+  
+  export function useDateInput({
+    date,
+    format,
+    locale,
+    minimumDate,
+    maximumDate,
+    onDateChange,
+    validate
+  }: {
+    date?: Date,
+    format?: string,
+    locale: Locale,
+    minimumDate?: Date,
+    maximumDate?: Date,
+    onDateChange: (date: Date) => void,
+    validate?: (date: Date) => boolean,
+  }): any
 }