message: added isReadOnly to the FormControl type definition
diff: @@ -18,6 +18,10 @@ interface IFormControl {
  * If `true` set the form control to the disabled state.
  */
  isDisabled?: boolean;
  + /**
  + * If `true` set the form control to the read only state.
  + */
  + isReadOnly?: boolean;
  }
  export type FormControlProps = IFormControl & BoxProps;
  