added resetTo

example/src/screens/PushedScreen.js

           <Text style={styles.button}>Pop To Root</Text>
         </TouchableOpacity>
 
+        <TouchableOpacity onPress={ this.onResetToPress.bind(this) }>
+          <Text style={styles.button}>Reset To</Text>
+        </TouchableOpacity>
+
       </View>
     );
   }
   onPopToRootPress() {
     this.navigator.popToRoot();
   }
+  onResetToPress() {
+    this.navigator.resetTo({
+      title: "New Root",
+      screen: "example.PushedScreen"
+    });
+  }
 }
 
 const styles = StyleSheet.create({

src/Screen.js

   popToRoot(params = {}) {
     return platformSpecific.navigatorPopToRoot(this, params);
   }
+  resetTo(params = {}) {
+    return platformSpecific.navigatorResetTo(this, params);
+  }
   showModal(params = {}) {
     return Navigation.showModal(params);
   }

src/platformSpecific.ios.js

   });
 }
 
+function navigatorResetTo(navigator, params) {
+  if (!params.screen) {
+    console.error('Navigator.resetTo(params): params.screen is required');
+    return;
+  }
+  const screenInstanceID = utils.getRandomId();
+  const {
+    navigatorStyle,
+    navigatorButtons,
+    navigatorEventID
+  } = _mergeScreenSpecificSettings(params.screen, screenInstanceID, params);
+  const passProps = Object.assign({}, params.passProps);
+  passProps.navigatorID = navigator.navigatorID;
+  passProps.screenInstanceID = screenInstanceID;
+  passProps.navigatorEventID = navigatorEventID;
+  passProps.listenForEvents = !!(navigatorButtons.leftButtons || navigatorButtons.rightButtons);
+  Controllers.NavigationControllerIOS(navigator.navigatorID).resetTo({
+    title: params.title,
+    component: params.screen,
+    animated: params.animated,
+    passProps: passProps,
+    style: navigatorStyle,
+    leftButtons: navigatorButtons.leftButtons,
+    rightButtons: navigatorButtons.rightButtons
+  });
+}
+
 function navigatorSetTitle(navigator, params) {
   Controllers.NavigationControllerIOS(navigator.navigatorID).setTitle({
     title: params.title
   navigatorPush,
   navigatorPop,
   navigatorPopToRoot,
+  navigatorResetTo,
   showModal,
   dismissModal,
   navigatorSetButtons,