rewrite RadioButton in TS

src/index.ts

@@ -25,21 +25,16 @@ export {
   CheckboxProps,
   IconToggle,
   IconToggleProps,
-
-  // Textfield as MKTextField,
-  // Switch as MKSwitch,
-  // IconToggle as MKIconToggle,
-
+  RadioButton,
+  RadioButtonGroup,
+  RadioButtonProps,
   Ripple,
   RippleProps,
-
   Switch,
   SwitchProps,
 
   // Progress as MKProgress,
   // Slider as MKSlider,
   // RangeSlider as MKRangeSlider,
   // Spinner as MKSpinner,
-  // RadioButton as MKRadioButton,
-  // Checkbox as MKCheckbox,
 } from './mdl'

src/mdl/IconToggle.tsx

@@ -19,7 +19,7 @@ import {
   TouchableWithoutFeedbackProps,
 } from 'react-native';
 
-import {TouchEvent} from "../internal/MKTouchable";
+import {TouchEvent} from '../internal/MKTouchable';
 import MKColor from '../MKColor';
 import {getTheme} from '../theme';
 import {CheckedListener, NullableReactChild} from '../types';